# Civil Engineering-Surveying and Leveling 362 Important MCQ PDF

Question No. 01
To avoid large centering error with very short legs, observations are generally made
(A) To chain pins
(B) By using optical system for centering the theodolite
(C) To a target fixed on theodolite tripod on which theodolite may be fitted easily
(D) All the above
Question No. 02
Different grades are joined together by a
(A) Compound curve
(B) Transition curve
(C) Reverse curve
(D) Vertical curve
Question No. 03
Which of the following methods of theodolite traversing is suitable for locating the details which
are far away from transit stations?
(A) Measuring angle and distance from one transit station
(B) Measuring angles to the point from at least two stations
(C) Measuring angle at one station and distance from other
(D) Measuring distance from two points on traverse line
Question No. 04
The line of collimation method of reduction of levels, does not provide a check on
(A) Intermediate sights
(B) Fore sights
(C) Back sights
(D) Reduced levels
Question No. 05
Which of the following methods of contouring is most suitable for a hilly terrain?
(A) Direct method
(B) Square method
(C) Cross-sections method
(D) Tachometric method
Question No. 06
The chord of a curve less than peg interval, is known as
(A) Small chord
(B) Sub-chord
(C) Normal chord
(D) Short chord
Question No. 07
The size of a plane table is
(A) 750 mm × 900 mm
(B) 600 mm × 750 mm
(C) 450 mm × 600 mm
(D) 300 mm × 450 mm
Question No. 08
If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure
respectively of the line AB will be
(A) +50 m, +86.6 m
(B) +86.6 m, -50 m
(C) +50 m, -86.6 m
(D) +70.7 m, -50 m
Question No. 09
A lemniscate curve between the tangents will be transitional throughout if the polar deflection
angle of its apex, is
(A)
(B)
(C)
(D)
Question No. 10
Contour interval is
(A) Inversely proportional to the scale of the map
(B) Directly proportional to the flatness of ground
(C) Larger for accurate works
(D) Larger if the time available is more
Question No. 11
The smaller horizontal angle between the true meridian and a survey line, is known
(A) Declination
(B) Bearing
(C) Azimuth
(D) Dip
Question No. 12
Contour interval is
(A) The vertical distance between two consecutive contours
(B) The horizontal distance between two consecutive contours
(C) The vertical distance between two points on same contour
(D) The horizontal distance between two points on same contour
Question No. 13
Check lines (or proof lines) in Chain Surveying, are essentially required
(A) To plot the chain lines
(B) To plot the offsets
(C) To indicate the accuracy of the survey work
(D) To increase the out-turn
Question No. 14
After fixing the plane table to the tripod, the main operations which are needed at each plane
table station are
(i) Levelling
(ii) Orientation
(iii) Centering
The correct sequence of these operations is
(A) (i), (ii), (iii)
(B) (i), (iii), (ii)
(C) (iii), (i), (ii)
(D) (ii), (iii), (i)
Question No. 15
There are two stations A and B. Which of the following statements is correct?
(A) The fore bearing of AB is AB
(B) The back bearing of AB is BA
(C) The fore and back bearings of AB differ by 180°
(D) All the above
Question No. 16
The Random errors tend to accumulate proportionally to
(A) Numbers of operations involved
(B) Reciprocal of operations involved
(C) Square root of the number of operation involved
(D) Cube root of the number of operation involved
Question No. 17
In direct method of contouring, the process of locating or identifying points lying on a contour is
called
(A) Ranging
(B) Centring
(C) Horizontal control
(D) Vertical control
Question No. 18
The conventional sign shown in below figure represents a

(B) Railway bridge
(C) Canal bridge
Question No. 19
Pick up the incorrect statement from the following:
(A) While measuring a distance with a tape of length 100.005 m, the distance to be increasing
by 0.005 m for each tape length
(B) An increase in temperature causes a tape to increase in length and the measured distance is
too large
(C) The straight distance between end points of a suspended tape is reduced by an amount
called the sag correction
(D) A 100 m tape of cross section 10 mm × 0.25 mm stretches about 10 mm under 5 kg pull
Question No. 20
For the construction of highway (or railway)
(A) Longitudinal sections are required
(B) Cross sections are required
(C) Both longitudinal and cross sections are required
(D) None of these
Question No. 21
Detailed plotting is generally done by
(B) Traversing
(C) Resection
(D) All of the above
Question No. 22
If the smallest division of a vernier is longer than the smallest division of its primary scale, the
vernier is known as
(A) Direct vernier
(B) Double vernier
(D) Simple vernier
Question No. 23
The method of reversal
(A) Is usually directed to examine whether a certain part is truly parallel or perpendicular to
another
(B) Makes the erroneous relationship between parts evident
(C) Both (a) and (b)
(D) Neither (a) nor (b)
Question No. 24
The line normal to the plumb line is known as
(A) Horizontal line
(B) Level line
(C) Datum line
(D) Vertical line
Question No. 25
In levelling operation
(A) When the instrument is being shifted, the staff must not be moved
(B) When the staff is being carried forward, the instrument must remain stationary
(C) Both (a) and (b)
(D) Neither (a) nor (b)
Question No. 26
The two point problem and three point problem are methods of
(A) Resection
(B) Orientation
(C) Traversing
(D) Resection and orientation
Question No. 27
Ramsden eye-piece consists of
(A) Two convex lenses short distance apart
(B) Two concave lenses short distance apart
(C) One convex lens and one concave lens short distance apart
(D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other
Question No. 28
The line of sight is kept as high above ground surface as possible to minimise the error in the
observed angles due to
(A) Shimmering
(B) Horizontal refraction
(C) Vertical refraction
(D) Both shimmering and horizontal refraction
Question No. 29
If is the stadia distance, is the focal length and is the distance between the objective and
vertical axis of the techeometer, the multiplying constant, is
(A) f/i
(B) i/f
(C) (f + d)
(D) f/d
Question No. 30
The desired sensitivity of a bubble tube with 2 mm divisions is 30″. The radius of the bubble tube
should be
(A) 13.75 m
(B) 3.44 m
(C) 1375 m
(D) None of these
Question No. 31
Subtense bar is an instrument used for
(A) Levelling
(B) Measurement of horizontal distances in plane areas
(C) Measurement of horizontal distances in undulated areas
(D) Measurement of angles
Question No. 32
Volume of the earth work may be calculated by
(A) Mean areas
(B) End areas
(C) Trapezoidal
(D) All the above
Question No. 33
Tacheometric formula for horizontal distances using horizontal sights can also suitable be
(A) The constants by sin2
(B) The constants by cos2
(C)
(D) The multiplying constant by cos2
Question No. 34
Pick up the correct statement from the following:
(A) The directions of plumb lines suspended at different points in a survey are not strictly
parallel
(B) In surveys of small extent, the effect of curvature may be ignored and the level surface of
the earth is assumed as horizontal
(C) In surveys of large extent, the effect of curvature of the earth must be considered
(D) All the above
Question No. 35
In levelling operation
(A) If second reading is more than first, it represents a rise
(B) If first reading is more than second, it represents a rise
(C) If first reading is less than second, it represents a fall
(D) Both (b) and (c)
Question No. 36
Over-turning of vehicles on a curve can be avoided by using
(A) Compound curve
(B) Vertical curve
(C) Reverse curve
(D) Transition curve
Question No. 37
Which of the following introduces an error of about 1 in 1000 if 20 m chain is used?
(A) Length of chain 20 mm wrong
(B) One end of the chain 0.9 m off the line
(C) One end of chain 0.9 m higher than the other
(D) All the above
Question No. 38
Chain surveying is well adopted for
(A) Small areas in open ground
(B) Small areas with crowded details
(C) Large areas with simple details
(D) Large areas with difficult details
Question No. 39
Two contour lines, having the same elevation
(A) Cannot cross each other
(B) Can cross each other
(C) Cannot unite together
(D) Can unite together
Question No. 40
The conventional sign shown in below figure represents a

(A) Bridge carrying railway below road
(B) Bridge carrying road below railway
(C) Bridge carrying road and railway at the same level
(D) A level crossing
Question No. 41
Which of the following statements is incorrect?
(A) Error due to refraction may not be completely eliminated by reciprocal levelling
(B) Tilting levels are commonly used for precision work
(C) The last reading of levelling is always a foresight
(D) All of the above statements are incorrect
Question No. 42
In levelling operation,
(A) The first sight on any change point is a back sight
(B) The second sight on any change point is a fore sight
(C) The line commences with a fore sight and closes with a back sight
(D) The line commences with a back sight and closes with a foresight
Question No. 43
The length of a traverse leg may be obtained by multiplying the latitude and
(A) Secant of its reduced bearing
(B) Sine of its reduced bearing
(C) Cosine of its reduced bearing
(D) Tangent of its reduced bearing
Question No. 44
While working on a plane table, the correct rule is:
(A) Draw continuous lines from all instrument stations
(B) Draw short rays sufficient to contain the points sought
(C) Intersection should be obtained by actually drawing second rays
(D) Take maximum number of sights as possible from each station to distant objects
Question No. 45
The vertical angle between longitudinal axis of a freely suspended magnetic needle and a
horizontal line at its pivot, is known
(A) Declination
(B) Azimuth
(C) Dip
(D) Bearing
Question No. 46
In the cross-section method of indirect contouring, the spacing of cross-sections depends upon
(i) Contour interval
(ii) Scale of plan
(iii) Characteristics of ground
(A) Only (i)
(B) (i) and (ii)
(C) (ii) and (iii)
(D) (i), (ii) and (iii)
Question No. 47
Transition curves are introduced at either end of a circular curve, to obtain
(A) Gradually decrease of curvature from zero at the tangent point to the specified quantity at
the junction of the transition curve with main curve
(B) Gradual increase of super-elevation from zero at the tangent point to the specified amount
at the junction of the transition curve with main curve
(C) Gradual change of gradient from zero at the tangent point to the specified amount at the
junction of the transition curve with main curve
(D) None of these
Question No. 48
A and B
sextant. The correct horizontal angle is
(A) cos –
(B) cos –
(C) cos –
(D) None of these
Question No. 49
Tilt of the staff in stadia tacheometry increases the intercept if it is
(A) Away from the telescope pointing down hill
(B) Towards the telescope pointing up-hill
(C) Away from the telescope pointing up-hill
(D) None of these
Question No. 50
Three point problem can be solved by
(A) Tracing paper method
(B)
(C)
(D) all of the above
Question No. 51
A dumpy level is set up with its eye-piece vertically over a peg . The height from the top of
peg to the centre of the eye-piece is 1.540 m and the reading on peg is 0.705 m. The level is
then setup over . The height of the eye-piece above peg is 1.490 m and a reading on is
2.195 m. The difference in level between and is
(A) 2.900 m
(B) 3.030 m
(C) 0.770 m
(D) 0.785 m
Question No. 52
In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and
the straight, and the angle between the polar ray and the straight, is
(A) 2
(B) 3
(C) 4/3
(D) 3/2
Question No. 53
The bellow figure is a conventional sign of

(A) M osque
(B) Temple
(C) Church
(D) Idgah
Question No. 54
A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and
3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels
of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is
(A) 0.015 m
(B) 0.030 m
(C) 0.045 m
(D) 0.060 m
Question No. 55
Hydrographic surveys deal with the mapping of
(A) Large water bodies
(B) Heavenly bodies
(C) Mountainous region
(D) Canal system
Question No. 56
Bowditch rule is applied to
(A) An open traverse for graphical adjustment
(B) A closed traverse for adjustment of closing error
(C) Determine the effect of local attraction
(D) None of the above
Question No. 57
Angles to a given pivot station observed from a number of traverse stations when plotted, the
lines to the pivot station intersect at a common point
(A) Angular measurements are correct and not the linear measurements
(B) Linear measurements are correct and not the angular measurements
(C) Angular and linear measurements are correct and not the plotting of traverse
(D) Angular and linear measurements and also plotting of the traverse are correct
Question No. 58
Pick up the correct statement from the following:
(A) The horizontal angle between magnetic meridian and true meridian at a place is
called magnetic declination or variance of the compass
(B) The imaginary lines which pass through points at which the magnetic declinations are equal
at a given time are called isogonic lines
(C) The isogonic lines through places at which the declination is zero are termedagonic lines
(D) All the above
Question No. 59
Straight, parallel and widely spaced contours represent
(A) A steep surface
(B) A flat surface
(C) An inclined plane surface
(D) Curved surface
Question No. 60
The real image of an object formed by the objective must lie
(A) In the plane of cross hairs
(B) At the centre of the telescope
(C) At the optical centre of the eye-piece
(D) Anywhere inside the telescope
Question No. 61
For a tachometer the additive and multiplying constants are respectively
(A) 0 and 100
(B) 100 and 0
(C) 0 and 0
(D) 100 and 100
Question No. 62
Correct distance obtained by an erroneous chain is:
(A) (Erroneous chain length/Correct chain length) × Observed distance
(B) (Correct chain length/Erroneous chain length) × Observed distance
(C) (Correct chain length/Observed distance) × Erroneous chain length
(D) None of these
Question No. 63
An imaginary line lying throughout on the surface of the earth and preserving a constant
inclination to the horizontal, is called
(A) Contour line
(C) Level line
(D) Line of gentle scope
Question No. 64
The constant vertical distance between two adjacent contours, is called
(A) Horizontal interval
(B) Horizontal equivalent
(C) Vertical equivalent
(D) Contour interval
Question No. 65
If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in
length, is
(A) (d²/60) m
(B) (d²/30) m
(C) (d²/40) m
(D) (d/30) m
Question No. 66
The sensitivity of a bubble tube can be increased by
(A) Increasing the diameter of the tube
(B) Decreasing the length of bubble
(C) Increasing the viscosity of liquid
(D) Decreasing the radius of curvature of tube
Question No. 67
A standard steel tape of length 30 m and cross-section 15 × 1.0 mm was standardised at 25°C and
at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If
the modulus of elasticity of steel tape is 2.2 × 106 kg/cm2, the correction to be applied is
(A) – 0.000909 m
(B) + 0.0909 m
(C) 0.000909 m
(D) None of these
Question No. 68
Pick up the correct statement from the following:
(A) It is difficult to eliminate an error completely at first trial
(B) Instability of the instrument makes it almost impossible to adjust it satisfactorily
(C) Adjustment screws must be left bearing firmly but should never be forced
(D) All the above
Question No. 69
The properties of autogenous curve for automobiles are given by
(A) True spiral
(B) Cubic parabola
(C) Bernoulli’s Lemniscate
(D) Clothoid spiral
Question No. 70
In chain surveying field work is limited to
(A) Linear measurements only
(B) Angular measurements only
(C) Both linear and angular measurements
(D) All the above
Question No. 71
The difference of levels between two stations A and B is to be determined. For best results, the
instrument station should be
(A) Equidistant from A and B
(B) Closer to the higher station
(C) Closer to the lower station
(D) As far as possible from the line AB
Question No. 72
The curve composed of two arcs of different radii having their centres on the opposite side of the
curve, is known
(A) A simple curve
(B) A compound curve
(C) A reverse curve
(D) A vertical curve
Question No. 73
Pick up the correct statement from the following:
(A) An observation or the resulting reading with the level on a levelling staff is called sight
(B) A back sight is the first sight taken after setting up the instrument in any position
(C) The first sight on each change point is a fore sight
(D) All the above
Question No. 74
The angle of intersection of a curve is the angle between
(A) Back tangent and forward tangent
(B) Prolongation of back tangent and forward tangent
(C) Forward tangent and long chord
(D) Back tangent and long chord
Question No. 75
If is the perimete D is the closing error in departure, the correction for
the departure of a traverse side of length , according to Bowditch rule, is
(A) D × L/l
(B) D × l²/L
(C) L × l D
(D) D × l/L
Question No. 76
Select the correct statement.
(A) Contour interval on any map is kept constant.
(B) Direct method of contouring is cheaper than indirect method.
(C) Intervisibility of points on a contour map cannot be ascertained.
(D) Slope of a hill cannot be determined with the help of contours.
Question No. 77
In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due
to
(A) Ease of reduction of observations
(B) Facility of holding
(C) Minimum effect of careless holding on the result
(D) None of these
Question No. 78
Whole circle bearing of a line is preferred to a quadrantal bearing merely because
(A) Bearing is not completely specified by an angle
(B) Bearing is completely specified by an angle
(C) Sign of the correction of magnetic declination is different in different quadrants
(D) Its Trigonometrical values may be extracted from ordinary tables easily
Question No. 79
It is more difficult to obtain good results while measuring horizontal distance by stepping
(A) Up-hill
(B) Down-hill
(C) In low undulations
(D) In plane areas
Question No. 80
Pick up the correct statement from the following:
(A) The apparent error on reversal is twice the actual error
(B) The correction may be made equal to half the observed discrepancy
(C) The good results may be obtained from a defective instrument by reversing and taking the
mean of two erroneous results
(D) All the above
Question No. 81
Which of the following methods of plane table surveying is used to locate the position of an
inaccessible point?
(B) Intersection
(C) Traversing
(D) Resection
Question No. 82
Imaginary line passing through points having equal magnetic declination is termed as
(A) Isogon
(B) Agonic line
(C) Isoclinic line
(D) None of these
Question No. 83
Which one of the following statements is correct?
(A) When the axes of rotation of the graduated circle and the verniers are not coincident, the
instrument possesses eccentricity
(B) The mean of the readings of the two verniers gives correct reading free from the eccentricity
(C) One Vernier may be used if the readings of two verniers differ by a constant
(D) All the above
Question No. 84
In geodetic surveys higher accuracy is achieved, if
(A) Curvature of the earth surface is ignored
(B) Curvature of the earth surface is taken into account
(C) Angles between the curved lines are treated as plane angles
(D) None of these
Question No. 85
The bearings of the lines AB and BC are 146° 30′ and 68° 30′. The included angle ABC is
(A) 102°
(B) 78°
(C) 45°
(D) None of these
Question No. 86
Transit rule of adjusting the consecutive coordinates of a traverse is used where
(A) Linear and angular measurements of the traverse are of equal accuracy
(B) Angular measurements are more accurate than linear measurements
(C) Linear measurements are more accurate than angular measurements
(D) All of the above
Question No. 87
Pick up the correct statement from the following:
(A) The lines of sight while observing back sight and fore sight lie in the same horizontal plane
(B) The staff readings are measurements made vertically downwards from a horizontal plane
(C) The horizontal plane with reference to which staff readings are taken, coincides with the
level surface through the telescope axis
(D) All the above
Question No. 88
The operation of resection involves the following steps
1. Rough orientation of the plane table
2. The three lines form a triangle of error
3. Drawing lines back through the three control points
4. Select a point in the triangle of error such that each ray is equally rotated either clockwise or
anti clockwise
5. The points obtained by three rays are the correct location.
The correct sequence is
(A) 1, 3, 2, 4, 5
(B) 1, 2, 3, 4, 5
(C) 1, 4, 3, 2, 5
(D) 1, 3, 2, 4, 5
Question No. 89
The lens equation 1/f = 1/ + 1/ is applicable
(A) When the thickness of the lens is small
(B) Only to conjugate distances along the principal axis
(C) The computed quantities are accurate enough for geometrical optics of simple distances
(D) All the above
Question No. 90
For true difference in elevations between two points and , the level must be set up
(A) At any point between A and B
(B) At the exact midpoint of A and B
(C) Near the point A
(D) Near the point B
Question No. 91
If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion
axis is 15 cm, the additive constant
(A) 0.1
(B) 0.4
(C) 0.6
(D) 1.33
Question No. 92
Diurnal variation of magnetic declination is
(A) Greater at equator than nearer the poles
(B) Less at equator than nearer the poles
(C) Less in summer than in winter
(D) Same at all latitudes and during different months
Question No. 93
Rankine’s deflection angle in minutes is obtained by multiplying the length of the chord by
(A) Degree of the curve
(B) Square of the degree of the curve
(C) Inverse of the degree of the curve
(D) None of these
Question No. 94
In case of a double line river, contours are
(A) Stopped at the banks of the river
(B) Stopped at the edge of the river
(C) Drawn across the water
(D) Drawn by parabolic curves having their vertex at the centre of the water
Question No. 95
The branch of surveying in which both horizontal and vertical positions of a point, are determined
by making instrumental observations, is known
(A) Tacheometry
(B) Tachemetry
(C) Telemetry
(D) All the above
Question No. 96
Refraction correction
(A) Completely eliminates curvature correction
(B) Partially eliminates curvature correction
(C) Adds to the curvature correction
(D) Has no effect on curvature correction
Question No. 97
Pick up the correct statement from the following:
(A) In the earth’s magnetic field, a magnetic needle rests in magnetic meridian
(B) The angle between the true meridian and the magnetic meridian is called magnetic variation
(C) One end of the magnetic needle supported at its centre of gravity tends to dip down
towards the nearer magnetic pole of the earth
(D) All the above
Question No. 98
If the plane table is not horizontal in a direction at right angles to the alidade, the line of sight is
parallel to the fiducial edge only for
(A) Horizontal sights
(B) Inclined sights upward
(C) Inclined sight downward
(D) None of these
Question No. 99
The conventional sign shown in below figure represents a

(A) Bridge carrying railway below road
(B) Bridge carrying road below railway
(C) Bridge carrying road and railway at the same level
(D) A level crossing
Question No. 100
(A) The vertical circle is usually continuous from 0° to 359°
(B) The readings increase when the telescope is elevated in the face left position
(C) The readings decrease when the telescope is elevated in the face right position
(D) All the above
Question No. 101
Select the correct statement.
(A) A contour is not necessarily a closed curve.
(B) A contour represents a ridge line if the concave side of lower value contour lies towards the
higher value contour
(C) Two contours of different elevations do not cross each other except in case of an
overhanging cliff
(D) All of the above statements are correct
Question No. 102
Pick up the correct statement from the following:
(A) If the slope of the curve of a mass diagram in the direction of increasing abscissa is
downward, it indicates an embankment
(B) The vertical distance between a maximum ordinate and the next forward maximum ordinate
represents the whole volume of the embankment
(C) The vertical distance between a minimum ordinate and the next forward maximum ordinate
represents the whole volume of a cutting
(D) All the above
Question No. 103
Pick up the correct statement from the following:
(A) The diaphragm is placed between eyepiece and the objective but nearer to the former
(B) The diaphragm is placed between the eyepiece and objective but nearer to the later
(C) The outer component of the objective is a double-convex lens of crown glass
(D) All the above
Question No. 104
If the whole circle bearing of a line is 270°, its reduced bearing is
(A) N 90° W
(B) S 90° W
(C) W 90°
(D) 90° W
Question No. 105
Pick up the correct statement from the following:
(A) The length of the brass handle is included in the length of chain
(B) The handles are on swivel joints to prevent twisting of the chain
(C) The fifth tag from either end of the chain is numbered 5
(D) All the above
Question No. 106
The process of determining the locations of the instrument station by drawing re sectors from the
locations of the known stations is
(B) Intersection
(C) Resection
(D) Traversing
Question No. 107
Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other
cultural details, are known as
(B) City surveys
(C) Topographical surveys
(D) Guide map surveys
Question No. 108
The operation of revolving a plane table about its vertical axis so that all lines on the sheet
become parallel to corresponding lines on the ground, is known
(A) Levelling
(B) Centering
(C) Orientation
(D) Setting
Question No. 109
Pick up the correct statement from the following:
(A) With both handles in his left hand, the chain man throws out the chain with his right hand
and the second chain man assists him to free it from knots
(B) The follower of the chaining operation should be more experienced than the leader
(C) At the end of the tenth chain length, the two chain men meet and the ten arrows are
(D) All the above
Question No. 110
Pick up the correct statement from the following:
(A) In astronomical telescope, the rays from the object after refraction at the objective are
brought to a focus before entering the eyepiece to produce a real inverted image in front of
the eye piece
(B) In Galileo’s telescope, the rays from the object get refracted at the objective and are
intercepted by the eyepiece before a real image is formed
(C) A line passing through the optical centre of the objective traversing through the eyepiece, is
called line of sight
(D) All the above
Question No. 111
The number of horizontal cross wires in a stadia diaphragm is
(A) One
(B) Two
(C) Three
(D) Four
Question No. 112
Total latitude of a point is positive if it lies
(A) North of the reference parallel
(B) South of the reference parallel
(C) East of the reference parallel
(D) West of the reference parallel
Question No. 113
If the length of a transition curve to be introduced between a straight and a circular curve of
radius 500 m is 90 m, the maximum deflection angle to locate its junction point, is
(A) 1°43′ 08″
(B) 1°43′ 18″
(C) 1°43′ 28″
(D) 1°43′ 38″
Question No. 114
Under ordinary conditions, the precision of a theodolite traverse is affected by
(A) Systematic angular errors
(B) Accidental linear errors
(C) Systematic linear errors
(D) Accidental angular errors
Question No. 115
The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from
that of the corresponding plane figure only to the extent of one second for every
(A) 100 sq. km of area
(B) 150 sq. km of area
(C) 200 sq. km of area
(D) None of these
Question No. 116
(A) 94.80 m
(B) 99.71 m
(C) 100.29 m
(D) 105.20 m
Question No. 117
An angle of deflection right, may be directly obtained by setting the instrument to read
(A) Zero on back station
(B) 180° on back station
(C) 90°
(D) 270° on back station
Question No. 118
The bellow picture is the conventional sign of

(A) Te mple
(B) Mosque
(C) Fort
(D) Church
Question No. 119
Location of contour gradient for a high way is best set out from
(A) Ridge down the hill
(C) Bottom to the ridge
Question No. 120
Setting out a curve by two theodolite method, involves
(A) Linear measurements only
(B) Angular measurements only
(C) Both linear and angular measurements
(D) None of these
Question No. 121
Direct method of contouring is
(A) A quick method
(B) Adopted for large surveys only
(C) Most accurate method
(D) Suitable for hilly terrains
Question No. 122
A lemniscate curve will not be transitional throughout, if its deflection angle, is
(A) 45°
(B) 60°
(C) 90°
(D) 120°
Question No. 123
If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within
(A) Staff normal
(B) Staff vertical
(C) Staff normal as well as vertical
(D) None of these
Question No. 124
The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When
the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of
the one division of the bubble, is
(A) 28.8 sec
(B) 41.25 sec
(C) 14.52 sec
(D) 25.05
Question No. 125
On a diagonal scale, it is possible to read up to
(A) One dimension
(B) Two dimensions
(C) Three dimensions
(D) Four dimensions
Question No. 126
The methods used for locating the plane table stations are
(ii) Traversing
(iii) Intersection
(iv) Resection
(A) (i) and (ii)
(B) (iii) and (iv)
(C) (ii) and (iv)
(D) (i) and (iii)
Question No. 127
Reduced bearing of a line is an angle between
(A) North line and given line measured clockwise
(B) North line and given line measured anticlockwise
(C) East or west and the given line
(D) Given line and the part of the meridian whether N end or S end, lying adjacent to it
Question No. 128
In horizontal angles, the error due to imperfect levelling of the plate bubble is
(A) Large when sights are nearly level
(B) Large for long sights
(C) Less for steeply inclined sights
(D) Large for steeply inclined sights
Question No. 129
If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is
sloping
(A) It is possible to set offsets correctly on east side
(B) It is possible to set offsets correctly on east side
(C) It is not possible to set offsets correctly on west side
(D) It is possible to set offsets correctly on both sides
Question No. 130
If is the difference in level between end points separated by , then the slope correction
is [(h²/2l) + (h4/8l3)]. The second term may be neglected if the value of in a 20 m distance is less
than
(A) ½ m
(B) 1 m
(C) 2 m
(D) 3 m
Question No. 131
With the rise of temperature, the sensitivity of a bubble tube
(A) Decreases
(B) Increases
(C) Remains unaffected
(D) None of the above
Question No. 132
Flint glass
(A) Has slightly the greater refracting power than crown glass
(B) Has roughly double refracting power than that of crown
(C) And crown glass proportions yield the required focal length and neutralise the dispersion
produced by the convex lens at the emergence from the concave
(D) All the above
Question No. 133
The imaginary line passing through the intersection of cross hairs and the optical centre of the
objective, is known as
(A) Line of sight
(B) Line of collimation
(C) Axis of the telescope
(D) None of these
Question No. 134
During levelling if back sight is more than foresight
(A) The forward staff is at lower point
(B) The back staff is at lower point
(C) The difference in level, cannot be ascertained
(D) None of these
Question No. 135
Pick up the correct statement from the following:
(A) The tangent screw enables to give small movement under conditions of smooth and positive
control
(B) Standing on the tripod is the levelling head or trib arch
(C) The levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
(D) All the above
Question No. 136
Closed contours, with higher value inwards, represent a
(A) Depression
(B) Hillock
(C) Plain surface
(D) None of the above
Question No. 137
If is the difference in height between end points of a chain of length , the required slope
correction is
(A) h²/2l
(B) h/2l
(C) h²/l
(D) 2h²/2l
Question No. 138
The instrument which is used in plane tabling for obtaining horizontal and vertical distances
directly without resorting to chaining, is known as
(C) Clinometer
(D) Tacheometer
Question No. 139
Pick up the correct statement from the following
(A) The contour lines having the same elevation cannot unite and continue as one line
(B) A contour can not end abruptly, but must ultimately close itself not necessarily within the
limits of map
(C) The direction of steepest slope at a point on a contour is at right angles to the contour
(D) All the above
Question No. 140
An imaginary line joining the points of equal elevation on the surface of the earth, represents
(A) Contour surface
(C) Contour line
(D) Level line
Question No. 141
If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes
and also the sum of west departures than the sum of the east departures, the bearing of the
closing line is in the
Question No. 142
The ratio of the angles subtended at the eye, by the virtual image and the object, is known as
telescopes
(A) Resolving power
(B) Brightness
(C) Field of view
(D) Magnification
Question No. 143
Pick up the correct statement from the following:
(A) Mistakes arise from inattention, inexperience or carelessness
(B) Systematic errors persist and have regular effects in the survey performances
(C) Accidental errors occur inspite of every precaution is taken
(D) All the above
Question No. 144
To orient a plane table at a point with two inaccessible points, the method generally adopted, is
(A) Intersection
(B) Resection
(D) Two point problem
Question No. 145
In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
(A) Adding 180°, if the given bearing is less than 180°
(B) Subtracting 180°, if the given bearing, is more than 180°
(C) Changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
(D) None of these
Question No. 146
due to curvature of earth is proportional
(A) d
(B) 1/d
(C) d²
(D) 1/d²
Question No. 147
Back bearing of a line is equal to
(A) Fore bearing ± 90°
(B) Fore bearing ± 180°
(C) Fore bearing ± 360°
(D) Fore bearing ± 270°
Question No. 148
To orient a plane table at a point roughly south of the mid-point of two inaccessible conical hill
stations and in the plains, a point is selected in line with AB and table is oriented at by
bringing ab in line with AB. A ray is then drawn towards and at the table is oriented by back
ray method. The orientation so obtained, is
(A) Unique and correct
(B) Incorrect
(C) Manifold and correct
(D) Not reliable
Question No. 149
While setting a plane table at a station it was found that the error in centering was 30 cm away
from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the
displacement of the end of the ray in plan from the true position will be
(A) 0.02 cm
(B) 0.15 cm
(C) 0.2 cm
(D) 0.1 cm
Question No. 150
is the measured distance, the correction is
(A) 2l sin2
(B) 2l cos2
(C) 2l tan2
(D) 2l cot2
Question No. 151
The type of surveying which requires least office work is
(A) Tachometry
(B) Trigonometrical levelling
(C) Plane table surveying
(D) Theodolite surveying
Question No. 152
The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the Vernier coincide
exactly with 59 divisions of the main plate. The transit can read angles accurate upto
(A) 5″
(B) 10″
(C) 15″
(D) 20″
Question No. 153
The ratio of the length of long chord and the tangent length of a circular curve of radius R
(A) sin
(B) cos
(C) 2 sin
(D) 2 cos
Question No. 154
(A) – 1) m
(B) – 1) m
(C) – 1) m
(D) – 1) m
Question No. 155
For a closed traverse the omitted measurements may be calculated
(A) Length of one side only
(B) Bearing of one side only
(C) Both length and bearing of one side
(D) All the above
Question No. 156
Horizontal distances obtained by thermometric observations
(A) Require slope correction
(B) Require tension correction
(C) Require slope and tension corrections
(D) Do not require slope and tension corrections
Question No. 157
A clinometer is used for
(A) Measuring angle of slope
(B) Correcting line of collimation
(C) Setting out right angles
(D) Defining natural features
Question No. 158
If L is the specified length of a tape, L1 its actual length and S the measured distance, then, the true
distance is given by the formula,
(A) /L) × S
(B) (L/ × S
(C) (L – /L × S
(D) /L)² × S
Question No. 159
In a perfect prismatic compass
(A) Magnetic axis and geometric axis of the needle coincide
(B) Ends of the needle and pivot are in same vertical and horizontal planes
(C) Pivot is vertically over the centre of the graduated circle
(D) All the above
Question No. 160
Pick up the correct statement from the following:
(A) Box sextant is used for the measurement of horizontal angles
(B) Cross staff is used for setting out right angles
(D) All the above
Question No. 161
Sensitiveness of a level tube is designated by
(B) Length of level tube
(C) Length of bubble of level tube
(D) None of the above
Question No. 162
The formula for the horizontal distances for inclined sights, on staff held normalis
(f/i) s f + d h
(A) Minus sign is used for angle of depression
(B) Plus sign is used for angle of depression
(C) Minus sign is used for angle of elevation
(D) None of these
Question No. 163
Accidental or compensating errors of length are proportional to
(A) L
(B)
(C) L
(D) L
Question No. 164
The latitude of a traverse leg is obtained by multiplying its length by
(A) Tangent of its reduced bearing
(B) Sign of its reduced bearing
(C) Cosine of its reduced bearing
(D) Cosecant of its reduced bearing
Question No. 165
If D is the degree of the curve of radius R, the exact length of its specified chord, is
(A) Radius of the curve × sine of half the degree
(B) Diameter of the curve × sine of half the degree
(C) Diameter of the curve × cosine of half the degree
(D) Diameter of the curve × tangent of half the degree
Question No. 166
Benchmark is established by
(A) Hypsometry
(B) Barometric levelling
(C) Spirit levelling
(D) Trigonometrical levelling
Question No. 167
If a tacheometer is fitted with an anal-latic lens
(A) Additive constant is 100, multiplying constant is zero
(B) Multiplying constant is 100, additive constant is zero
(C) Both multiplying and additive constants are 100
(D) Both multiplying and additive constants are 50
Question No. 168
Short offsets are measured with
(A) An ordinary chain
(B) An invar tape
(C) A metallic tape
(D) A steel tape
Question No. 169
The representation of general topography of a very flat terrain is possible only
(A) By drawing contours at large interval
(B) By drawing contours at small interval
(C) By giving spot levels at large interval
(D) By giving spot levels to salient features at close interval
Question No. 170
True meridian of different places
(A) Converge from the South Pole to the North Pole
(B) Converge from the North Pole to the South Pole
(C) Converge from the equator to the poles
(D) Run parallel to each other
Question No. 171
The angle between the prolongation of the preceding line and the forward line of a traverse is
called
(A) Deflection angle
(B) Included angle
(C) Direct angle
(D) None of the above
Question No. 172
To set out a parallel from a given inaccessible point to a given line AB, the following observations
Distance AB and angle PAM = a and angle PBA = b are measured where M is a point on the
line BA produced. The perpendicular to the desired parallel line from A and B are:
(A) AB/(cot b – cot a)
(B) AB/(cos b – cos a)
(C) AB/(cot a – cot b)
(D) AB/(cot a – cos b)
Question No. 173
Pick up the correct statement from the following:
(A) A refracting telescope consists optically of two lenses
(B) The principal axes of both the lenses coincide the optical axis of the telescope
(C) The lens nearer the object to be viewed is convex and is called objective
(D) All the above
Question No. 174
In case of a direct vernier scale
(A) Graduations increase in opposite direction in which graduations of the main scale increase
(B) Smallest division is longer than smallest division of the main scale
(C) Graduations increase in the same direction in which graduations of the main scale increase
(D) None of these
Question No. 175
The operation of making the algebraic sum of latitudes and departures of a closed traverse, each
equal to zero, is known
(A) Balancing the sights
(B) Balancing the departures
(C) Balancing the latitudes
(D) Balancing the traverse
Question No. 176
Dumpy level is most suitable when
(A) The instrument is to be shifted frequently
(B) Fly levelling is being done over long distance
(C) Many readings are to be taken from a single setting of the instrument
(D) All of the above
Question No. 177
Magnetic declination at any place
(A) Remains constant
(B) Does not remain constant
(C) Fluctuates
(D) Changes abruptly
Question No. 178
l, the required slope correction is
(A) 2l cos2
(B) 2l sin2
(C) l tan2
(D) l cos2
Question No. 179
The combined effect of curvature and refraction over a distance kilometres is
(A) 67.2 L2 mm
(B) 76.3 L2 mm
(C) 64.5 L2 mm
(D) None of these
Question No. 180
The systematic errors which persist and have regular effects in the performance of a survey
operation are due to
(A) Carelessness
(B) Faulty instrument
(C) Inattention
(D) None of these
Question No. 181
The instrument used for accurate centering in plane table survey is
(A) Spirit level
(C) Plumbing fork
(D) Trough compass
Question No. 182
Accuracy of elevation of various points obtained from contour map is limited to
(A) ½ of the contour interval
(B) ¼ th of the contour interval
(C) rd of the contour interval
(D) th of the contour interval
Question No. 183
The curvature of the earth’s surface, is taken into account only if the extent of survey is more than
(A) 100 sq km
(B) 160 sq km
(C) 200 sq km
(D) 260 sq km
Question No. 184
The theodolites used for making tacheometric observations by optical wedge system, are
(A) Provided with stadia hairs in front of eye piece
(B) Not provided with stadia hairs at all
(C) Fitted with a glass wedge inside the telescope
(D) Fitted with a glass wedge in front of telescope
Question No. 185
When the bubble of the level tube of a level, remains central
(A) Line of sight is horizontal
(B) Axis of the telescope is horizontal
(C) Line of collimation is horizontal
(D) Geometrical axis of the telescope is horizontal
Question No. 186
An imaginary line lying throughout the surface of ground and preserving a constant inclination to
the horizontal is known as
(A) Contour line
(B) Horizontal equivalent
(C) Contour interval
Question No. 187
Accurate measurement of deflection angles with a transit not properly adjusted may be made by
(A) Setting the Vernier A at zero at back station and then plunging the telescope
(B) Setting the Vernier A at zero at back station and turning the instrument to the forward
station
(C) Taking two back sights one with the telescope normal and the other with telescope inverted
(D) None of these
Question No. 188
Pick up the correct statement from the following:
(A) The framework which consists of a series of connected lines, the lengths and directions of
which are found from measurements, is called a traverse
(B) The system of a series of lines which forms a circuit which ends at the starting point, is called
a closed traverse
(C) The traverse that starts from a point already fixed in some survey system and ends on
another such point, is called a controlled traverse
(D) All the above
Question No. 189
The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted
staff reading against the roof is 1.795 m, the floor level below the slab, is
(A) 3.290 m
(B) 3.300 m
(C) 3.275 m
(D) 2.790 m
Question No. 190
Probable systematic error in precise levelling as recommended by International Geodetic
Association should not exceed (where is in kilometers.)
(A) ± 0.1 k mm
(B) ± 0.2 k mm
(C) ± 0.1 k
(D) 0.2 k mm
Question No. 191
The resection by two point problem as compared to three point problem
(A) Gives more accurate problem
(B) Takes less time
(C) Requires more labour
(D) None of the above
Question No. 192
The co-ordinate of a point measured perpendicular to the parallel, is called
(A) Total latitude
(B) Meridian distance
(C) Total departure
(D) Consecutive co-ordinate
Question No. 193
The bearing of C from A is N 30° E and from B, 50 metres east of A, is N 60° W. The departure
of C from A is
(A) 50 m
(B) 50 m
(C) 25 m
(D) 25 m
Question No. 194
If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of
the sloping sides. D is the distance between the cross sections then, Prismoidal correction for a
level section is
(A) D/2m(h1 – h2)
(B) D/3m(h1 – h2)
(C) D/6m(h1 – h2)2
(D) D/6m(h1 – h2)3
Question No. 195
Pick up the correct statement from the following:
(A) The eyepiece plays no part in defining the line of sight
(B) The diaphragm plays no part in defining the line of sight
(C) The optical centre of the objective plays no part in defining the line of sight
(D) None of these
Question No. 196
The suitable contour interval for a map with scale 1 : 10000 is
(A) 2 m
(B) 5 m
(C) 10 m
(D) 20 m
Question No. 197
In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to
(A) Line of sight
(B) Line of collimation
(C) Axis of the telescope
(D) None of these
Question No. 198
Ranging is an operation of
(A) Reconnaissance
(B) Judging the distance
(C) Determination of slope
(D) Establishing intermediate points between terminals
Question No. 199
Locating the position of a plane table station with reference to three known points, is known as
(A) Intersection method
(C) Resection method
(D) Three point problem
Question No. 200
If f1 and f2 are the distances from the optical centre of a convex lens of focal length to conjugate
two points P1 and P2 respectively, the following relationship holds good
(A) f = f1 + f2
(B) f = ½ (f1 + f2)
(C) 1/f = 1/f1 + 1/f2
(D) None of these
Question No. 201
If the intercept on a vertical staff is observed as 0.75 m from a tachometer, the horizontal distance
between tachometer and staff
(A) 7.5 m
(B) 25 m
(C) 50 m
(D) 75 m
Question No. 202
Simpson’s rule for calculating areas states that the area enclosed by a curvilinear figure divided
into an even number of strips of equal width, is equal to
(A) Half the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of
remaining odd offsets, and thrice the sum of the even offsets
(B) One-third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum
of remaining odd offsets and four times the sum of the even offsets
(C) One-third the width of a strip, multiplied by the sum of two extreme offsets, four times the
sum of the remaining odd offsets, and twice the sum of the even offsets
(D) One-sixth the width of a strip, multiplied by the sum of the two extreme offsets, twice the
sum of remaining odd offsets and four times the sum of the even offsets
Question No. 203
The ratio of the distances at which a stated length can be distinguished by the telescope and the
human eye, respectively, is called
(A) Brightness of telescope
(B) Magnification of telescope
(C) Resolving power of telescope
(D) None of these
Question No. 204
The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree
of the curve is
(A) 5.73°
(B) 5.37°
(C) 3.57°
(D) 3.75°
Question No. 205
If the shift and the length of
the transition curve, then, total tangent length of the curve, is
(A) (R – S – L/2
(B) (R + S – L/2
(C) (R + S L/2
(D) (R – S L/2
Question No. 206
A series of closely spaced contour lines represents a
(A) Steep slope
(B) Gentle slope
(C) Uniform slope
(D) Plane surface
Question No. 207
In an internal focusing telescope
(A) The objective is at a fixed distance from the diaphragm
(B) The focusing is done by the sliding of a divergent lens
(C) The focusing divergent lens is situated at about the middle of the tube
(D) All the above
Question No. 208
During secular variation of magnetic meridian at different places
(A) Range of oscillations is constant
(B) Period of oscillation is constant
(C) Range and period of oscillation both vary
(D) Period of oscillation only varies
Question No. 209
(A) 100 2
(B) 100
(C) 100 3
(D) 100 -1
Question No. 210
While viewing through a level telescope and moving the eye slightly, a relative movement occurs
between the image of the levelling staff and the cross hairs. The instrument is
(A) Correctly focussed
(B) Not correctly focussed
(C) Said to have parallax
(D) Free from parallax
Question No. 211
Intersection method of detailed plotting is most suitable for
(A) Forests
(B) Urban areas
(C) Hilly areas
(D) Plains
Question No. 212
While measuring a chain line between two stations and intervened by a raised ground
(A) Vision gets obstructed
(B) Chaining gets obstructed
(C) Both vision and chaining get obstructed
(D) All the above
Question No. 213
Mistakes which may produce a very serious effect upon the final results arise due to
(A) In attention
(B) In experience
(C) Carelessness
(D) All of these
Question No. 214
Numbers of links per metre length of a chain are
(A) 2
(B) 5
(C) 7
(D) 10
Question No. 215
Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of
error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m,
the maximum length of offset should be limited to
(A) 14.14 m
(B) 28.28 m
(C) 200 m
(D) None of these
Question No. 216
The ‘point of curve’ of a simple circular curve, is
(A) Point of tangency
(B) Point of commencement
(C) Point of intersection
(D) Mid-point of the curve
Question No. 217
Prolongation of chain line across an obstruction in chain surveying, is done by
(A) Making angular measurements
(B) Drawing perpendiculars with a chain
(C) Solution of triangles
(D) All the above
Question No. 218
Resolving power of a telescope depends on
(A) The diameter of the aperture
(B) The pupil aperture of the eye
(C) The diameter of the object glass
(D) All the above
Question No. 219
ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is
30°, the bearing of CD, is
(A) 90°
(B) 120°
(C) 210°
(D) 270°
Question No. 220
Pick up the correct statement from the following:
(A) If the image of the object does not fall on the plane of the cross-lines, parallax exists
(B) Parallax has nothing to do with the eyepiece
(C) The eyepiece is adjusted for clear vision of the cross hairs
(D) All the above
Question No. 221
The Huygens telescope eye piece
(A) Is aplanatic
(B) Achromatic
(C) Both (a) and (b)
(D) Neither (a) nor (b)
Question No. 222
The bearing of lines OA and OB are 16° 10′ and 332° 18′, the value of the included angle BOA is
(A) 316° 10′
(B) 158° 28′
(C) 348° 08′
(D) 43° 52′
Question No. 223
For a curve of radius 100 m and normal chord 10 m, the Rankine’s deflection angle, is
(A) 0°25′.95
(B) 0°35′.95
(C) 1°25′.53
(D) 2°51′.53
Question No. 224
The reduced bearing of a line is N 87° W. Its whole circle bearing is
(A) 87°
(B) 273°
(C) 93°
(D) 3°
Question No. 225
While surveying a plot of land by plane tabling, the field observations
(A) And plotting proceed simultaneously
(B) And plotting do not proceed simultaneously
(C) And recorded in field books to be plotted later
(D) All the above
Question No. 226
The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is
1.345 m, the reduced level of the point, is
(A) 502.685 m
(B) 501.345 m
(C) 501.340 m
(D) 504.030 m
Question No. 227
Let angular value of one graduation of a tube of length be the radius of
its internal curved surface, then
(A) = x/206265 R
(B) = R/206265 x
(C) = 206265/x. R
(D) = x. R/206265
Question No. 228
If is in kilometres, the curvature correction is
(A) 58.2 L2 mm
(B) 64.8 L2 mm
(C) 74.8 L2 mm
(D) 78.4 L2 mm
Question No. 229
Pick up the correct statement from the following:
(A) To locate a gross error in bearing that may exist in controlled theodolite traverse, we may
plot the traverse from each end. The traverse station having the same coordinates by each
route is the one where the error lies
(B) To locate a gross error in bearing, in a controlled traverse, we plot the traverse and the
station through which perpendicular to sector of the closing line passes is the station at
(C) To locate a gross error due to taping in a controlled traverse, we plot the traverse to a
convenient scale. The bearing of the closing error will be approximately the same as that of
the leg in which the gross error consists
(D) All the above
Question No. 230
Permanent adjustments of a level are
(A) 2 in number
(B) 3 in number
(C) 4 in number
(D) 6 in number
Question No. 231
Orientation of a plane table by solving two point problems is only adopted when
(A) Saving of time is a main factor
(B) Better accuracy is a main factor
(C) Given points are inaccessible
(D) None of these
Question No. 232
If is the speed of a locomotive in km per hour, g is the acceleration due to gravity, is the
distance between running faces of the rails and is the radius of the circular curve, the required
super elevation is
(A) gV²/GR
(B) Rg/GV²
(C) GR/gV²
(D) GV²/gR
Question No. 233
Pick up the correct statement from the following:
(A) Spherical aberration may be reduced by diminishing the aperture
(B) Spherical aberration may be minimised by replacing the single lens by a combination of the
lenses
(C) In telescope objectives, a combination of convex lens and concave lens is used
(D) All the above
Question No. 234
The method generally preferred to for contouring an undulating area, is
(A) Chain surveying
(B) Plane table surveying
(C) Tacheometrical surveying
(D) Compass surveying
Question No. 235
Measuring with a 30 m chain, 0.01 m too short, introduces
(A) Positive compensating error
(B) Negative compensating error
(C) Positive cumulative error
(D) Negative cumulative error
Question No. 236
The ratio of the radius and apex distance of a curve deflecting
(A) – 1
(B) 1 –
(C) – 1
(D) – 1
Question No. 237
In setting up a plane table at any station
(A) Levelling is done first
(B) Centering is done first
(C) Both levelling and centering are done simultaneously
(D) Orientation is done first
Question No. 238
Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff
head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is
(A) 104.0 m
(B) 104.5 m
(C) 105.0 m
(D) 105.5 m
Question No. 239
Metric chains are generally available in
(A) 10 m and 20 m length
(B) 15 m and 20 m length
(C) 20 m and 30 m length
(D) 25 m and 100 m length
Question No. 240
The bearing of AB is 190° and that of CB is 260° 30′. The included angle ABC, is
(A) 80° 30′
(B) 99° 30′
(C) 70° 30′
(D) None of these
Question No. 241
Pick up the correct statement from the following
(A) 1 second of arc corresponds to a displacement ratio of 1:206, 300
(B) 1 degree of arc corresponds to a displacement ratio of 1:57
(C) The angular errors tend to propagate themselves along a traverse as the square root of the
number of stations
(D) All the above
Question No. 242
Planimeter is used for measuring
(A) Volume
(B) Area
(D) Slope angle
Question No. 243
An ideal vertical curve to join two gradients, is
(A) Circular
(B) Parabolic
(C) Elliptical
(D) Hyperbolic
Question No. 244
The bubble tube is nearly filled with
(A) Alcohol or chloroform
(B) A liquid which is very mobile
(C) A liquid having low freezing point
(D) All the above
Question No. 245
Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal
to
(A) Shift
(B) Twice the shift
(C) Thrice the shift
(D) Four times the shift
Question No. 246
Determining the difference in elevation between two points on the surface of the earth, is known
as
(A) Levelling
(B) Simple levelling
(C) Differential levelling
(D) Longitudinal levelling
Question No. 247
If arithmetic s and closing error in latitude is , the
correction for a side whose latitude is , as given by Transit Rule, is
(A) l ×
(B) l ×
(C) Lat × (dx/l)
(D) None of these
Question No. 248
In case of reduction of levels by the height of instrument method,
(A) B.S. –
(B) (R.L. + I + F.S.) –
(C) Both (a) and (b) above
(D) Neither (a) nor (b)
Question No. 249
The distance between terminal points computed from a subsidiary traverse run between them, is
generally known, as
(A) Traverse leg
(B) A base
(C) Traverse base
(D) All the above
Question No. 250
The bearing of line AB is 152° 30′ and angle ABC measured clockwise is 124° 28′. The bearing
of BC is
(A) 27° 52′
(B) 96° 58′
(C) 148° 08′
(D) 186° 58′
Question No. 251
The limiting length of an offset does not depend upon
(A) Accuracy of the work
(B) Method of setting out perpendiculars
(C) Scale of plotting
(D) Indefinite features to be surveyed
Question No. 252
Which one of the following procedures for getting accurate orientation is the most distinctive
feature of the art of plane tabling?
(B) Intersection
(C) Traversing
(D) Resection
Question No. 253
In a closed traverse, sum of south latitudes exceeds the sum of north latitudes and the sum of east
departures exceeds the sum of west departures, then, the closing line will lie in
Question No. 254
If the declination of the needle is 10° W
(A) Each of the whole circle reckoning has to be micros by 10°
(B) In the quadrantal method, the correction is positive in the 1st and 3rd quadrants
(C) In the quadrantal method, the corrections is negative in 2nd and 4th quadrants
(D) All the above
Question No. 255
The most reliable method of plotting a theodolite traverse, is
(A) By consecutive co-ordinates of each station
(B) By independent co-ordinates of each station
(C) By plotting included angles and scaling off each traverse leg
(D) By the tangent method of plotting
Question No. 256
The distance between steps for measuring downhill to obtain better accuracy
(A) Decreases with decrease of slope
(B) Increases with increase of slope
(C) Decreases with increase of slope
(D) Decreases with decrease of weight of the chain
Question No. 257
The boundary of water of a still lake represents
(A) Level surface
(B) Horizontal surface
(C) Contour line
(D) A concave surface
Question No. 258
The 10 mm markings on a levelling staff placed at 20 m are separated by
Question No. 259
The sensitiveness of a level tube decreases if
(A) Radius of curvature of its inner surface is increased
(B) Diameter of the tube is increased
(C) Length of the vapour bubble is increased
(D) Both viscosity and surface tension are increased
Question No. 260
The orthographical projection of a traverse leg upon the reference meridian, is known as
(A) Departure of leg
(B) Latitude to the leg
(C) Co-ordinate of the leg
(D) Bearing of the leg
Question No. 261
The distances AC and BC are measured from two fixed points A and B whose distance AB is known.
The point C is plotted by intersection. This method is generally adopted in
(A) Chain surveying
(B) Traverse method of surveys
(C) Triangulation
(D) None of these
Question No. 262
The defect of a lens whereby rays of white light proceeding from a point get dispersed into their
components and conveyed to various foci, forming a blurred and coloured image is known as
(A) Chromatic aberration
(B) Spherical aberration
(C) Astigmatism
(D) Coma
Question No. 263
A uniform slope was measured by the method of stepping. If the difference in level between two
points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to
(A) Cumulative, + 0.11 m
(B) Compensating, ± 0.11 m
(C) Cumulative, – 0.11 m
(D) None of these
Question No. 264
Systematic errors are those errors
(A) Which cannot be recognised
(B) Whose character is understood
(C) Whose effects are cumulative and can be eliminated
(D) None of these
Question No. 265
A dumpy level was set up at mid-point between pegs A and B, 80 m apart and the staff readings
were 1.32 and 1.56. When the level was set up at a point 10 m from A on BA produced, the staff
readings obtained at A and B were 1.11 and 1.39. The correct staff reading from this set up
at S should be
(A) 1.435
(B) 1.345
(C) 1.425
(D) None of these
Question No. 266
A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back
sight on the preceding transit station taken and transit is rotated about its vertical axis. The
(A) Azimuth of the forward line
(B) Bearing of the forward line
(C) Back bearing of the forward line
(D) Equal to 360°-azimuth of the forward line
Question No. 267
Two hill tops and 20 km apart are intervened by a third top . If the top most contour of
the three hill tops are of the same value, state whether the line of sight AB
(A) Passes clear of hill top C
(B) Passes below the hill top C
(C) Grazes the hill top C
(D) None of these
Question No. 268
The bearings of two traverse legs AB and BC are N52° 45′ E and N34° 30′ E respectively. The
deflection angle is
(A) 18° 15′ E
(B) 18° 15′ N
(C) 18° 15′ W
(D) 18° 15′ L
Question No. 269
In a theodolite
(A) The telescope axis is perpendicular to transit axis
(B) The axis of rotation is perpendicular to transit axis
(C) The telescope axis, the transit axis and the rotation axis pass through the centre of
theodolite
(D) All the above
Question No. 270
For taking offsets with an optical square on the right hand side of the chain line, it is held
(A) By right hand upside down
(B) By left hand upright
(C) By right hand upright
(D) By left hand upside down
Question No. 271
, the error over the whole
length of the traverse of lines of length is
(A) l n
(B) n
(C) n
(D) n
Question No. 272
The magnetic meridian at any point, is the direction indicated by a freely suspended
(A) Magnetic needle
(B) And properly balanced magnetic needle
(C) Properly balanced and uninfluenced by local attractive force
(D) Magnetic needle over an iron pivot
Question No. 273
Bergschrund is a topographical feature in
(A) Plains
(B) Water bodies
(C) Hills
(D) Glaciated region
Question No. 274
R, the distance between the mid-point of
the curve and long chord, is
(A) R (1 –
(B) R
(C) R
(D) R (1 –
Question No. 275
A relatively fixed point of known elevation above datum, is called
(A) Bench mark
(B) Datum point
(C) Reduced level
(D) Reference point
Question No. 276
The power of a lens
(A) Is reciprocal of its focal length
(B) Is positive if it is a convex lens
(C) Is negative if it is a concave lens
(D) Is measured in Diopter
Question No. 277
The approximate formula for radial or perpendicular offsets from the tangent, is
(A) x/2R
(B) x²/2R
(C) x/R
(D) x²/R
Question No. 278
The included angles of a theodolite traverse, are generally measured
(A) Clockwise from the forward station
(B) Anti-clockwise from the back station
(C) Anti-clockwise from the forward station
(D) Clockwise from the back station
Question No. 279
The intercept of a staff
(A) Is maximum if the staff is held truly normal to the line of sight
(B) Is minimum if the staff is held truly normal to the line of sight
(C) Decreases if the staff is tilted away from normal
(D) Increases if the staff is tilted towards normal
Question No. 280
In a constant level tube, size of the bubble remains constant because upper wall is
(C) Flat
(D) Convex downwards
Question No. 281
While measuring the distance between two points along upgrade with the help of a 20 m chain,
the forward end of the chain is shifted forward through a distance
(A) 20 (sin – 1)
(B) 20 (cos – 1)
(C) 20 (sec – 1)
(D) 20 (cosec – 1)
Question No. 282
Contours of different elevations may cross each other only in the case of
(A) An overhanging cliff
(B) A vertical cliff
(D) An inclined plane
Question No. 283
Diopter is the power of a lens having a focal length of
(A) 25 cm
(B) 50 cm
(C) 75 cm
(D) 100 cm
Question No. 284
A theodolite is said to be in perfect adjustment if
(A) Rotation axis is vertical to the transit axis
(B) Transit axis is perpendicular to line of collimation
(C) Line of collimation sweeps out a vertical plane while the telescope is elevated or depressed
(D) All the above
Question No. 285
In chain surveying, perpendiculars to the chain line are set out by
(A) A theodolite
(B) A prismatic compass
(C) A level
(D) An optical square
Question No. 286
A lens or combination of lenses in which the following defect is completely eliminated is
called aplanatic
(A) Spherical aberration
(B) Chromatic aberration
(C) Coma
(D) Astigmatism
Question No. 287
Pick up the method of surveying in which field observations and plotting proceed simultaneously
from the following
(A) Chain surveying
(B) Compass surveying
(C) Plan table surveying
(D) Tacheometric surveying
Question No. 288
For orientation of a plane table with three points A, B and C, Bessel’s drill is
(A) Align B through A and draw a ray towards C, align A through B and draw A ray towards C,
finally align C through the point of intersection of the previously drawn rays
(B) Align C through A and draw a ray towards B, align A through C and draw A ray towards B,
finally align B through the point of intersection of the previously drawn rays
(C) Align c through B and draw a ray towards A, align B through C and draw A ray towards A,
finally align A, through the point of intersection of the previously, drawn rays
(D) In the first two steps any two of the points may be used and a ray drawn towards the third
point, which is sighted through the point of intersection of previously drawn rays in the final
step.
Question No. 289
Probable accidental error in precise levelling as recommended by International Geodetic
Association should not exceed (where k is in kilometers.)
(A) ± 0.1 k mm
(B) ± 0.5 k mm
(C) ± 1 k mm
(D) ± 5 k mm
Question No. 290
In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The
focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of
the focussing lens, is
(A) 5.24 cm
(B) 6.24 cm
(C) 7.24 cm
(D) 8.24 cm
Question No. 291
The main principle of surveying is to work
(A) From part to the whole
(B) From whole to the part
(C) From higher level to the lower level
(D) From lower level to higher level
Question No. 292
T1 and T2 are its points of tangencies, the angle between
the tangent at T1 and long chord T1 T2 will be
(A)
(B)
(C)
(D)
Question No. 293
The rise and fall method of reduction of levels, provides a check on
(A) Back sights
(B) Fore sights
(C) Intermediate sights
(D) All of these
Question No. 294
The surface of zero elevation around the earth, which is slightly irregular and curved, is known as
(A) Mean sea level
(B) Geoid surface
(C) Level surface
(D) Horizontal surface
Question No. 295
If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On
the curve the ratio of the length of the transition curve of same radius on road and railway, is
(A) 2.828
(B) 3.828
(C) 1.828
(D) 0.828
Question No. 296
The apparent error on reversal is
(A) Equal to the actual error
(B) Twice the actual error
(C) Thrice the actual error
(D) None of these
Question No. 297
If the long chord and tangent length of a circular curve of radius R are equal the angle of
deflection, is
(A) 30°
(B) 60°
(C) 90°
(D) 120°
Question No. 298
In precision theodolite traverse if included angles are read twice and the mean reading accepted
using both verniers having a least count of 30″. Assuming the instrument to be in perfect
adjustment, linear measurements correct to 6 mm per 30 metre tape duly corrected for
temperature, slope and sag, the angular error of closure not to exceed (where n is the number of
traverse legs)
(A) 50″ n
(B) 30″ n
(C) 60″ n
(D) None of these
Question No. 299
(A) Horizontal hairs
(B) Vertical hairs
(C) Horizontal and two vertical hairs
(D) None of these
Question No. 300
Magnetic bearing of a survey line at any place
(A) Remains constant
(B) Changes systematically
(C) Varies differently in different months of the year
(D) Is always greater than true bearing
Question No. 301
The chaining on sloping ground is
(A) Easier along the falling gradient
(B) Easier along the up gradient
(C) Equally convenient along falling as well as up gradient
(D) All the above
Question No. 302
The additional lines which are measured to show the correctness of the chain surveying are called:
(A) Check clines
(B) Proof lines
(C) Tie lines
(D) All of these
Question No. 303
The best method of interpolation of contours, is by
(A) Estimation
(B) Graphical means
(C) Computation
(D) All of these
Question No. 304
Greater accuracy in linear measurements, is obtained by
(A) Tacheometry
(B) Direct chaining
(C) Direct taping
(D) All the above
Question No. 305
If the whole circle bearing of a line is 180°, its reduced bearing is
(A) S 0° E
(B) S 0° W
(C) S
(D) N
Question No. 306
s R, the length of its long chord, is
(A) R cos
(B) 2R cos
(C) R sin
(D) 2R sin
Question No. 307
Cross hairs in surveying telescopes, are fitted
(A) In the objective glass
(B) At the centre of the telescope
(C) At the optical centre of the eye piece
(D) In front of the eye piece
Question No. 308
Prismatic compass is considered more accurate than a surveyor’s compass, because
(A) It is provided with a better magnetic needle
(B) It is provided with a sliding glass in the object vane
(C) Its graduations are in whole circle bearings
(D) It is provided with a prism to facilitate reading of its graduated circle
Question No. 309
For high sensivity of the bubble tube
(A) A liquid of low viscosity is used
(B) A liquid of low surface tension is used
(C) The bubble space should be long
(D) All the above
Question No. 310
If 50 m point of a 100 m tape is 50 cm off line, and 50 m sections are straight, an error is generated
equal to
(A) 1/10,000
(B) 1/15,000
(C) 1/20,000
(D) 1/25,000
Question No. 311
The radius of curvature of the arc of the bubble tube is generally kept
(A) 10 m
(B) 25 m
(C) 50 m
(D) 100 m
Question No. 312
The direction of steepest slope on a contour, is
(A) Along the contour
(B) At an angle of 45° to the contour
(C) At right angles to the contour
(D) None of these
Question No. 313
The difference in the lengths of an arc and its subtended chord on the earth surface for a distance
of 18.2 km, is only
(A) 1 cm
(B) 5 cm
(C) 10 cm
(D) 100 cm
Question No. 314
If deflection angles are measured in a closed traverse, the difference between the sum of the
right-hand and that of the left hand angles should be equal to
(A) 0°
(B) 90°
(C) 180°
(D) 360°
Question No. 315
The accuracy of measurement in chain surveying, does not depend upon
(A) Length of the offset
(B) Scale of the plotting
(C) Importance of the features
(D) General layout of the chain lines
Question No. 316
The true meridian of a place is the line in which earth’s surface is intersected by a plane through
(A) East and west points
(C) North and south geographical poles
(D) North and south magnetic poles
Question No. 317
The area of any irregular figure of the plotted map is measured with
(A) Pentagraph
(B) Sextant
(C) Clinometer
(D) Planimeter
Question No. 318
If is the pull applied at the ends of tape in kg, is the length of tape between end marks in
metres, is the weight of the tape in kg per metre run, then sag correction
(A) C = w²l3/24F²
(B) C = w3l²/24F²
(C) C = w²l3/24F3
(D) C = 24w²l3/80F3
Question No. 319
(A) E = 1 –
(B) E = 1 –
(C) E = 1 –
(D) None of these
Question No. 320
The construction of optical square is based, on the principle of optical
(A) Reflection
(B) Refraction
(C) Double refraction
(D) Double reflection
Question No. 321
R, the length of the curve is:
(A)
(B)
(C)
(D)
Question No. 322
(A) 1.5 /100
(B) 1.5 /100
(C) 1.5 3/100
(D) 1.5 3
Question No. 323
The difference of level between a point below the plane of sight and one above, is the sum of two
staff readings and an error would be produced equal to
(A) The distance between the zero of gradient and the foot of the staff
(B) Twice the distance between the zero of graduation and the foot of the staff
(C) Thrice the distance between the zero of graduation and the foot of the staff
(D) None of the above
Question No. 324
lemniscate curve, the equation of the curve, is
(A) l =
(B) l =
(C) l =
(D) l =
Question No. 325
In tangential tacheometry, an ordinary level staff is used
(A) Leaning towards the instrument for inclined sights upward
(B) Leaning away from the instrument for inclined sights downwards
(C) Vertical in all cases
(D) None of these
Question No. 326
Stadia techeometry was discovered by James Watt in the year.
(A) 1670
(B) 1770
(C) 1870
(D) 1900
Question No. 327
Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the
sight on the down-slope, must be less than
(A) 30 m
(B) 25 m
(C) 20 m
(D) 15 m
Question No. 328
The distance between the point of intersection of an upgrade +g1% and downgrade % and the
highest point of the vertical curve of length L, is
(A) – /400
(B) + /400
(C) + /800
(D) – /800
Question No. 329
Surveys which are carried out to provide a national grid of control for preparation of accurate
maps of large areas are known
(A) Plane surveys
(B) Geodetic surveys
(C) Geographical surveys
(D) Topographical surveys
Question No. 330
If +0.8% grade meets -0.7% grade and the rate of change of grade for 30 m distance is 0.05, the
length of the vertical curve will be
(A) 600 m
(B) 700 m
(C) 800 m
(D) 900 m
Question No. 331
The angle between two plane mirrors of optical square, is
(A) 20°
(B) 30°
(C) 45°
(D) 60°
Question No. 332
With usual notations, the expression V²/gR represents
(A) Centrifugal force
(B) Centrifugal ratio
(C) Super elevation
Question No. 333
Profile levelling is usually done for determining
(A) Contours of an area
(B) Capacity of a reservoir
(C) Elevations along a straight line
(D) Boundaries of property
Question No. 334
Keeping the instrument height as 1½ m, length of staff 4 m, the up gradient of the ground 1 in 10,
the sight on the up slope must be less than
(A) 25 cm
(B) 20 m
(C) 45 m
(D) 10 m
Question No. 335
Perpendicularity of an offset may be judged by eye, if the length of the offset is
(A) 5 m
(B) 10 m
(C) 15 m
(D) 20 m
Question No. 336
You have to observe an included angle with better accuracy than what is achievable by a vernier,
you will prefer the method of
(A) Repetition
(B) Reiteration
(C) Double observations
(D) Exactness
Question No. 337
If the sight distance (S) is equal to the length of the vertical-curve (2l) joining two grades g1% and –
g2%, the height of the apex will be
(A) (S – l)/400 × –
(B) – /400
(C) – /1600l
(D) None of these
Question No. 338
If the radius of a simple curve is 600 m, the maximum length of the chord for calculating offsets, is
taken
(A) 15 m
(B) 20 m
(C) 25 m
(D) 30 m
Question No. 339
Subtense tacheometry is generally preferred to if ground is
(A) Flat
(B) Undulating
(C) Mountainous
(D) Deserts
Question No. 340
The area of a plane triangle ABC, having its base AC and perpendicular height , is
(A) ½ bh
(B) ½ ba sin C
(C) ½ bc sin A
(D) All the above
Question No. 341
In reciprocal levelling, the error which is not completely eliminated, is due to
(A) Earth’s curvature
(B) Non-adjustment of line of collimation
(C) Refraction
(D) Non-adjustment of the bubble tube
Question No. 342
The first reading from a level station is
(A) Foresight
(B) Intermediate sight
(C) Back-sight
(D) Any sight
Question No. 343
If is the length of a sub-chord and is the radius of simple curve, the angle of deflection
between its tangent and sub-chord, in minutes, is equal to
(A) 573 S/R
(B) 573 R/S
(C) 1718.9 R/S
(D) 1718.9 S/R
Question No. 344
While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the
same position in its tube, it indicates
(A) The rotation axis is vertical
(B) The trunnion axis is horizontal
(C) The line of collimation is perpendicular to vertical axis
(D) None of the above
Question No. 345
The slope correction for a 3° slope for a length of 100 m, is
(A) -0.11 m
(B) -0.12 m
(C) -1.87 m
(D) -0.137 m
Question No. 346
Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm
focal length. The focal length of the combination is
(A) 10 cm
(B) 20 cm
(C) 30 cm
(D) 40 cm
Question No. 347
Cross-staff is used for
(A) Setting out right angles
(C) Taking levels
(D) Measuring distances
Question No. 348
The staff intercept will be
(A) Greater farther off the staff is held
(B) Smaller, farther off the staff is held
(C) Smaller, nearer the staff is held
(D) Same, wherever the staff is held
Question No. 349
A bearing of a line is also known as
(A) Magnetic bearing
(B) True bearing
(C) Azimuth
(D) Reduced bearing
Question No. 350
ABCD is a rectangular plot of land. If the bearing of the side AB is 75°, the bearing of DC is
(A) 75°
(B) 255°
(C) 105°
(D) 285°
Question No. 351
For indirect ranging, number of ranging rods required, is
(A) 1
(B) 2
(C) 3
(D) 4
Question No. 352
An ideal transition curve is
(A) Cubic parabola
(B) Cubic spiral
(C) Clothoid spiral
(D) True spiral
Question No. 353
Ranging in chain survey means
(A) Looking at an isolated point not on the line
(B) Establishing an intermediate point on the line
(C) Determining the distance between end points
(D) Determining the offset distance
Question No. 354
A well conditioned triangle has no angle less than
(A) 20°
(B) 30°
(C) 45°
(D) 60°
Question No. 355
Geodetic surveying is undertaken
(A) For production of accurate maps of wide areas
(B) For developing the science of geodesy
(C) Making use of most accurate instruments and methods of observation
(D) All the above
Question No. 356
For preparation of a contour plan for a route survey
(A) Method of squares is used
(B) Method of trace contour is used
(C) Method of cross profile is used
(D) Indirect method of contouring is used
Question No. 357
A sewer is laid from a manhole to a manhole , 250 m away along a gradient of 1 in 125. If the
reduced level of the invert at is 205.75 m and the height of the boning rod is 3 m, the reduced
level of the sight rail at , is
(A) 208.75 m
(B) 202.75 m
(C) 206.75 m
(D) 211.75 m
Question No. 358
A back sight
(A) Is always taken on a point of known elevation or can be computed
(B) Is added to the known level to obtain the instrument height
(C) Taken on an inverted staff is treated as negative
(D) All the above
Question No. 259
Removal of parallax, may be achieved by focussing
(A) The objective
(B) The eye-piece
(C) The objective and the eye-piece
(D) None of these
Question No. 360
The angle of intersection of a contour and a ridge line, is
(A) 30°
(B) 45°
(C) 60°
(D) 90°
Question No. 361
(A) Embankment on the centre line
(B) Excavation on the centre line
(C) Earth work on the centre line
(D) None of these
Question No. 362
The ‘fix’ of a plane table from three known points, is good, if
(A) Middle station is nearest
(B) Middle station is farthest
(C) Either the right or left station is nearest
(D) None of these