ONLINE MCQ EE-ILLUMINATION 7

Q61. A mercury vapour lamp gives ____ light.
 A.  white
 [Wrong Answer]
 B.  pink
 [Wrong Answer]
 C.  yellow
 [Wrong Answer]
 D.  greenish blue
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2204’).click(function(){
qid2204=$(‘#qid2204’).val();
section2204=$(‘#section2204’).val();
type2204=$(‘#type2204’).val();
subtype2204=$(‘#subtype2204’).val();
$.post(‘../../fav’,{ qid:qid2204, section: section2204, type: type2204, subtype: subtype2204 },function(ajaxresult){
$(‘#getrequest2204’).html(ajaxresult);

qid2204=$(‘#qid2204’).val(”);
section2204=$(‘#section2204’).val(”);
type2204=$(‘#type2204’).val(”);
subtype2204=$(‘#subtype2204’).val(”);
});
});
});

 

Q62. In an incandescent lamp bird cage filament is usually used in vacuum bulb so as to
 A.  reduce the oxidation phenomenon
 [Wrong Answer]
 B.  reduce the convection losses
 [Wrong Answer]
 C.  have uniform radiations
 [Correct Answer]
 D.  increase the life span of the filament
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2205’).click(function(){
qid2205=$(‘#qid2205’).val();
section2205=$(‘#section2205’).val();
type2205=$(‘#type2205’).val();
subtype2205=$(‘#subtype2205’).val();
$.post(‘../../fav’,{ qid:qid2205, section: section2205, type: type2205, subtype: subtype2205 },function(ajaxresult){
$(‘#getrequest2205’).html(ajaxresult);

qid2205=$(‘#qid2205’).val(”);
section2205=$(‘#section2205’).val(”);
type2205=$(‘#type2205’).val(”);
subtype2205=$(‘#subtype2205’).val(”);
});
});
});

 

Q63. Soft shadows are produced by
 A.  using surface source of light instead of point source of light
 [Wrong Answer]
 B.  increasing the number of lamps
 [Wrong Answer]
 C.  both (a) and (b)
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2206’).click(function(){
qid2206=$(‘#qid2206’).val();
section2206=$(‘#section2206’).val();
type2206=$(‘#type2206’).val();
subtype2206=$(‘#subtype2206’).val();
$.post(‘../../fav’,{ qid:qid2206, section: section2206, type: type2206, subtype: subtype2206 },function(ajaxresult){
$(‘#getrequest2206’).html(ajaxresult);

qid2206=$(‘#qid2206’).val(”);
section2206=$(‘#section2206’).val(”);
type2206=$(‘#type2206’).val(”);
subtype2206=$(‘#subtype2206’).val(”);
});
});
});

 

Q64. Fine diameter tungsten wires are made by
 A.  turning
 [Wrong Answer]
 B.  swaging
 [Wrong Answer]
 C.  compressing
 [Wrong Answer]
 D.  wire drawing
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2207’).click(function(){
qid2207=$(‘#qid2207’).val();
section2207=$(‘#section2207’).val();
type2207=$(‘#type2207’).val();
subtype2207=$(‘#subtype2207’).val();
$.post(‘../../fav’,{ qid:qid2207, section: section2207, type: type2207, subtype: subtype2207 },function(ajaxresult){
$(‘#getrequest2207’).html(ajaxresult);

qid2207=$(‘#qid2207’).val(”);
section2207=$(‘#section2207’).val(”);
type2207=$(‘#type2207’).val(”);
subtype2207=$(‘#subtype2207’).val(”);
});
});
});

 

Q65. On which of the following factors does the depreciation or maintenance factor depend ?
 A.  Lamp cleaning schedule
 [Wrong Answer]
 B.  Ageing of the lamp
 [Wrong Answer]
 C.  Type of work carried out at the premises
 [Wrong Answer]
 D.  All of above
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2208’).click(function(){
qid2208=$(‘#qid2208’).val();
section2208=$(‘#section2208’).val();
type2208=$(‘#type2208’).val();
subtype2208=$(‘#subtype2208’).val();
$.post(‘../../fav’,{ qid:qid2208, section: section2208, type: type2208, subtype: subtype2208 },function(ajaxresult){
$(‘#getrequest2208’).html(ajaxresult);

qid2208=$(‘#qid2208’).val(”);
section2208=$(‘#section2208’).val(”);
type2208=$(‘#type2208’).val(”);
subtype2208=$(‘#subtype2208’).val(”);
});
});
});

 

Q66. Due to moonlight, illumination is nearly
 A.  3000 lumens/m2
 [Wrong Answer]
 B.  300 lumens/m2
 [Wrong Answer]
 C.   30 lumens/m2
 [Wrong Answer]
 D.  0.3 lumen/m2
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2209’).click(function(){
qid2209=$(‘#qid2209’).val();
section2209=$(‘#section2209’).val();
type2209=$(‘#type2209’).val();
subtype2209=$(‘#subtype2209’).val();
$.post(‘../../fav’,{ qid:qid2209, section: section2209, type: type2209, subtype: subtype2209 },function(ajaxresult){
$(‘#getrequest2209’).html(ajaxresult);

qid2209=$(‘#qid2209’).val(”);
section2209=$(‘#section2209’).val(”);
type2209=$(‘#type2209’).val(”);
subtype2209=$(‘#subtype2209’).val(”);
});
});
});

 

Q67. In electric discharge lamps for stabilizing the arc
 A.  a reactive choke is connected in series with the supply
 [Correct Answer]
 B.  a condenser is connected in series to the supply
 [Wrong Answer]
 C.  a condenser is connected in parallel to the supply
 [Wrong Answer]
 D.  a variable resistor is connected in the circuit
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2210’).click(function(){
qid2210=$(‘#qid2210’).val();
section2210=$(‘#section2210’).val();
type2210=$(‘#type2210’).val();
subtype2210=$(‘#subtype2210’).val();
$.post(‘../../fav’,{ qid:qid2210, section: section2210, type: type2210, subtype: subtype2210 },function(ajaxresult){
$(‘#getrequest2210’).html(ajaxresult);

qid2210=$(‘#qid2210’).val(”);
section2210=$(‘#section2210’).val(”);
type2210=$(‘#type2210’).val(”);
subtype2210=$(‘#subtype2210’).val(”);
});
});
});

 

Q68. Sometimes the wheels ofrotating machi­nery, under the influence of fluorescent lamps appear to be stationary. This is due to the
 A.  low power factor
 [Wrong Answer]
 B.  stroboscopic effect
 [Correct Answer]
 C.  fluctuations
 [Wrong Answer]
 D.  luminescence effect
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2211’).click(function(){
qid2211=$(‘#qid2211’).val();
section2211=$(‘#section2211’).val();
type2211=$(‘#type2211’).val();
subtype2211=$(‘#subtype2211’).val();
$.post(‘../../fav’,{ qid:qid2211, section: section2211, type: type2211, subtype: subtype2211 },function(ajaxresult){
$(‘#getrequest2211’).html(ajaxresult);

qid2211=$(‘#qid2211’).val(”);
section2211=$(‘#section2211’).val(”);
type2211=$(‘#type2211’).val(”);
subtype2211=$(‘#subtype2211’).val(”);
});
});
});

 

Q69. Stroboscopic effect due to use of discharge lamps in workshops results in moving machinery appearing
 A.  stationary
 [Wrong Answer]
 B.  stationary running slow
 [Wrong Answer]
 C.  stationary running in reverse direc­tion
 [Wrong Answer]
 D.  all of the above
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2212’).click(function(){
qid2212=$(‘#qid2212’).val();
section2212=$(‘#section2212’).val();
type2212=$(‘#type2212’).val();
subtype2212=$(‘#subtype2212’).val();
$.post(‘../../fav’,{ qid:qid2212, section: section2212, type: type2212, subtype: subtype2212 },function(ajaxresult){
$(‘#getrequest2212’).html(ajaxresult);

qid2212=$(‘#qid2212’).val(”);
section2212=$(‘#section2212’).val(”);
type2212=$(‘#type2212’).val(”);
subtype2212=$(‘#subtype2212’).val(”);
});
});
});

 

Q70. Reflectors are provided with slits at the top to
 A.  introduce chimney effect for clean­ing
 [Wrong Answer]
 B.  reduce colour contrast
 [Wrong Answer]
 C.  reduce heating effect
 [Wrong Answer]
 D.  do all of the above functions
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2213’).click(function(){
qid2213=$(‘#qid2213’).val();
section2213=$(‘#section2213’).val();
type2213=$(‘#type2213’).val();
subtype2213=$(‘#subtype2213’).val();
$.post(‘../../fav’,{ qid:qid2213, section: section2213, type: type2213, subtype: subtype2213 },function(ajaxresult){
$(‘#getrequest2213’).html(ajaxresult);

qid2213=$(‘#qid2213’).val(”);
section2213=$(‘#section2213’).val(”);
type2213=$(‘#type2213’).val(”);
subtype2213=$(‘#subtype2213’).val(”);
});
});
});

 

CE ONLINE TEST-FLUID MECHANICS PART 1
ONLINE MCQ EE-ILLUMINATION 6

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