DMRC JE/SSC JE/CIL MT ELECTRICAL ENGINEERING IMPORTANT MCQ PART 3(BASIC ELECTRICAL)


101. The potential gradient in a cable is
maximum in
A. Conductor
B. Outer sheath
C. Insulation
D. Uniformly all over
102. The Q-factor of a parallel resonant circuit is also known
as
A. Current magnification
factor
B. Voltage
magnification factor
C. Load factor
D. Leakage factor
103. The Q-factor of a series resonant circuit is also known as
A. Current
magnification factor
B. Voltage magnification
factor
C. Load factor
D. Leakage factor
104. What is the form factor of a triangular wave?
A. 1.16
B. 1.11
C. 1.73
D. 1.41
105. In a rectangular wave, the form factor is
A. 1.11
B. 1.16
C. 1.0
D. 1.73
106. Which of the following dielectric
materials makes the highest-capacitance capacitor?
A. Air
B. Barium-strontium
titanite
C. Mica
D. Electrolyte
107. In a circuit, an active element is one which
A. Supplies energy
B. Receives energy
C. Both supplies and
receives energy
D. Amplifies signal
108. An electric circuit contains
A. Passive elements
B. Active elements
C. Both active and passive
elements
D. Reactive elements
109. What is the hot resistance of a 100 W,
220 V incandescent lamp?
A. 2.2 Ω
B. 22 Ω
C. 484 Ω
D. 4.84 Ω
110. Which statement is true about a passive circuit?
A. A circuit with neither
a source of current nor a source of potential difference
B. A circuit with a
voltage source
C. A circuit with a
current source
D. A circuit with only
resistance as a load
111. What is a closed path made of several
branches of the network called?
A. Junction
B. Node
C. Terminal
D. Loop
112. The internal resistance of an ideal voltage source is
A. Infinite
B. Equal to the load
resistance
C. Zero
D. To be determined
113. What is the conductance of a circuit
having three 10 Ω resistors in parallel?
A. 0.3 S
B. 3.33 S
C. 0.33 S
D. 30 S
114. Electric energy refers to
A. Volt divided by
coulomb
B. Volt-ampere
C. Volt-coulomb
D. Watt divided by
time
115. A capacitor requires 12 μC of charge
to raise its potential of 3 V. What is the capacitance of the capacitor?
A. 36 μF
B. 15 μF
C. 0.25 μF
D. 4 μF
116. A capacitor opposes change in
A. Voltage
B. Current
C. Voltage and current
D. Neither voltage nor
current
117. What is the total resistance of a two
equal valued resistors in series?
A. The difference of
both
B. The product of both
C. Twice as one
D. The sum of their
reciprocals
118. The ratio of maximum value to the
effective value of an alternating quantity is called
A. Form factor
B. Peak factor
C. Dynamic factor
D. Leakage factor
119. For series capacitors, total charge is
A. The sum of
individual charges
B. Equal to the charge of
either capacitors
C. Equal to the
product of the charges
D. The quotient of the
charges
120. Series resonant circuit is sometimes known as
A. Rejector circuit
B. Acceptor circuit
C. Inductive circuit
D. Capacitive circuit
121. Parallel resonant circuit is sometimes called as
A. Acceptor circuit
B. Rejector circuit
C. Inductive circuit
D. Capacitive circuit
122. When two pure sine waves of the same
frequency and the same amplitude which are exactly 180˚ out-of-phase are added
together, the result is
A. A wave with twice
the amplitude
B. A wave with half
the amplitude
C. Zero signal
D. A wave with twice
the frequency
123. If two complex conjugates are added,
___ components results.
A. In-phase
B. Quadrature
C. Complex
D. Out-of-phase
124. If an emf in circuit A produces a
current in circuit B, then the same emf in circuit B produces the same current
in circuit A. this theorem is known as
A. Maximum power
transfer theorem
B. Millman’s theorem
C. Reciprocity theorem
D. Norton’s theorem
125. According to Gauss theorem, flux can be equated to
A. Charge
B. Field intensity
C. Current
D. Voltage
126. An open resistor when checked with an ohmmeter reads
A. Zero
B. Infinite
C. High but within the
tolerance
D. Low but not zero
127. Norton’s theorem is ____ Thevenin’s theorem.
A. The same as
B. The converse of
C. Older that
D. More accurate than
128. What value of R is needed with a 0.05
μF C for an RC time constant of 0.02 s?
A. 400 Ω
B. 400 MΩ
C. 400 GΩ
D. 400 kΩ
129. Which of the following is the statement of Ohm’s law?
A. Electric current is
directly proportional to both voltage and resistance
B. Electric current varies
directly as the voltage and inversely as the resistance
C. Electrical power is
directly proportional to the resistance and inversely as the current squared
D. Electrical power is
directly proportional to both voltage squared and the resistance
130. The admittance of a parallel RLC circuit is found to be the
___ sum of conductance and susceptances.
A. Algebraic
B. Arithmetic
C. Vector
D. Phasor
131. A wire of one kilometer length has a
resistance of 20 Ω. If the length is halved, then the new resistance is ___ the
original resistance.
A. Half
B. Twice
C. One-fourth
D. Three times
132. A series-parallel combination of identical resistors will
A. Increase the power
rating compared with one resistor alone
B. Increase the
voltage rating compared with one resistor alone
C. Reduce the voltage
rating compared with resistor alone
D. Result in an
expensive circuit
133. The ___ of an alternating quantity is
defined as the fractional part of a period or cycle through which the quantity
has advanced from selected origin.
A. Phase
B. Frequency
C. Amplitude
D. Waveform
134. An inductive circuit of resistance
16.5 Ω and inductance of 0.14 H takes a current of 25 A. if the frequency is 50
Hz, find the supply voltage.
A. 1501 V
B. 1174 V
C. 1877 V
D. 991 V
135. Which of the following has a positive
temperature coefficient?
A. Mica
B. Manganin
C. Silicon
D. Carbon
136. The ratio of the flux density to the
electric field intensity in the dielectric is called
A. Permittivity
B. Field intensity
C. Permeability
D. Elasticity
137. It is impossible to change the voltage
across a capacitor instantly, as this would produce ___ current.
A. Infinite
B. Zero
C. Low
D. High
138. Which of the following is not a factor
affecting capacitance of a basic capacitor?
A. Area of plates
B. Number of plates
C. Distance between
plates
D. Dielectric material
used
139. When voltage is applied across a
ceramic dielectric the electrostatic field produced is 50 times greater than
air dielectric. The dielectric constant of ceramic therefore is
A. 50
B. 100
C. 16.67
D. 5
140. The reason why alternating current can induce voltage is
A. It has high peak
value
B. It has a stronger
magnetic field than direct current
C. It has a constant
magnetic field
D. It has a varying
magnetic field
141. When two unequal values of resistors
are connected in parallel across a dc source, greater current flows through the
A. Higher resistance
B. Lower resistance
C. Higher wattage
resistance
D. Lower wattage
resistance
142. A real current source has
A. Infinite internal
resistance
B. Zero internal
resistance
C. Large internal
resistance
D. Small internal
resistance
143. What is the cross-sectional are of a
conductor whose diameter is 0.001 inch?
A. One micron
B. One angstrom
C. One steradian
D. One circular mil
144. Which of the following describes the action of a capacitor?
A. Stores electrical energy
B. Opposes changes in
current flow
C. Creates a dc
resistance
D. Converts ac to dc
145. High resistance values are a
consequence of the ___ of the film.
A. Thickness
B. Length
C. Thinness
D. Area
146. For parallel capacitors, total charge is
A. The sum of individual
charges
B. Equal to the charge
of either capacitors
C. Equal to the
product of the charges
D. The quotient of the
charges
147. Which waveform in which the rms value
and the mean value are equal?
A. Square wave
B. Triangular wave
C. Sine wave
D. Sawtooth
148. In a series circuit with unequal resistances the
A. Highest R has the
highest V
B. Lowest R has the
highest V
C. Lowest R has the
highest I
D. Highest R has the
highest I
149. In a parallel bank with unequal branch resistances
A. The highest R has
the highest I
B. The lowest R has the
highest V
C. The lowest R has
the highest V
D. The highest R has
the highest V
150. A rheostat is a form of
A. Variable resistor
B. Variable capacitor
C. Potentiometer
D. Thermocouple

var pfHeaderImgUrl = ”;var pfHeaderTagline = ”;var pfdisableClickToDel = 0;var pfHideImages = 0;var pfImageDisplayStyle = ‘right’;var pfDisablePDF = 0;var pfDisableEmail = 0;var pfDisablePrint = 0;var pfCustomCSS = ”;var pfBtVersion=’1′;(function(){var js,pf;pf=document.createElement(‘script’);pf.type=’text/javascript’;pf.src=’//cdn.printfriendly.com/printfriendly.js’;document.getElementsByTagName(‘head’)[0].appendChild(pf)})();Print Friendly and PDF

DMRC JE/SSC JE/CIL MT ELECTRICAL ENGINEERING IMPORTANT MCQ PART 4(BASIC ELECTRICAL)
DMRC JE/SSC JE/CIL MT ELECTRICAL ENGINEERING IMPORTANT MCQ PART 2(BASIC ELECTRICAL)

Leave a Reply