ONLINE MCQ EE-ILLUMINATION 5

Q41. The unit of luminous flux is
 A.  watt/m2
 [Wrong Answer]
 B.  lumen
 [Correct Answer]
 C.  lumen/m2
 [Wrong Answer]
 D.  watt
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2184’).click(function(){
qid2184=$(‘#qid2184’).val();
section2184=$(‘#section2184’).val();
type2184=$(‘#type2184’).val();
subtype2184=$(‘#subtype2184’).val();
$.post(‘../../fav’,{ qid:qid2184, section: section2184, type: type2184, subtype: subtype2184 },function(ajaxresult){
$(‘#getrequest2184’).html(ajaxresult);

qid2184=$(‘#qid2184’).val(”);
section2184=$(‘#section2184’).val(”);
type2184=$(‘#type2184’).val(”);
subtype2184=$(‘#subtype2184’).val(”);
});
});
});

 

Q42. The colour of sodium vapour discharge lamp is
 A.  red
 [Wrong Answer]
 B.  pink
 [Wrong Answer]
 C.  yellow
 [Correct Answer]
 D.  bluish green
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2185’).click(function(){
qid2185=$(‘#qid2185’).val();
section2185=$(‘#section2185’).val();
type2185=$(‘#type2185’).val();
subtype2185=$(‘#subtype2185’).val();
$.post(‘../../fav’,{ qid:qid2185, section: section2185, type: type2185, subtype: subtype2185 },function(ajaxresult){
$(‘#getrequest2185’).html(ajaxresult);

qid2185=$(‘#qid2185’).val(”);
section2185=$(‘#section2185’).val(”);
type2185=$(‘#type2185’).val(”);
subtype2185=$(‘#subtype2185’).val(”);
});
});
});

 

Q43. A reflector is provided to
 A.  protect the lamp
 [Wrong Answer]
 B.  provide better illumination
 [Wrong Answer]
 C.  avoid glare
 [Wrong Answer]
 D.  do all of the above
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2186’).click(function(){
qid2186=$(‘#qid2186’).val();
section2186=$(‘#section2186’).val();
type2186=$(‘#type2186’).val();
subtype2186=$(‘#subtype2186’).val();
$.post(‘../../fav’,{ qid:qid2186, section: section2186, type: type2186, subtype: subtype2186 },function(ajaxresult){
$(‘#getrequest2186’).html(ajaxresult);

qid2186=$(‘#qid2186’).val(”);
section2186=$(‘#section2186’).val(”);
type2186=$(‘#type2186’).val(”);
subtype2186=$(‘#subtype2186’).val(”);
});
});
});

 

Q44. ____ does not have separate choke
 A.  Sodium vapour lamp
 [Correct Answer]
 B.  Fluorescent lamp
 [Wrong Answer]
 C.  Mercury vapour lamp
 [Wrong Answer]
 D.  All of the above
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2187’).click(function(){
qid2187=$(‘#qid2187’).val();
section2187=$(‘#section2187’).val();
type2187=$(‘#type2187’).val();
subtype2187=$(‘#subtype2187’).val();
$.post(‘../../fav’,{ qid:qid2187, section: section2187, type: type2187, subtype: subtype2187 },function(ajaxresult){
$(‘#getrequest2187’).html(ajaxresult);

qid2187=$(‘#qid2187’).val(”);
section2187=$(‘#section2187’).val(”);
type2187=$(‘#type2187’).val(”);
subtype2187=$(‘#subtype2187’).val(”);
});
});
});

 

Q45. A substance which change its electrical resistance when illuminated by light is called
 A.  photoelectric
 [Wrong Answer]
 B.  photovoltaic
 [Wrong Answer]
 C.  phatoconductive
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2188’).click(function(){
qid2188=$(‘#qid2188’).val();
section2188=$(‘#section2188’).val();
type2188=$(‘#type2188’).val();
subtype2188=$(‘#subtype2188’).val();
$.post(‘../../fav’,{ qid:qid2188, section: section2188, type: type2188, subtype: subtype2188 },function(ajaxresult){
$(‘#getrequest2188’).html(ajaxresult);

qid2188=$(‘#qid2188’).val(”);
section2188=$(‘#section2188’).val(”);
type2188=$(‘#type2188’).val(”);
subtype2188=$(‘#subtype2188’).val(”);
});
});
});

 

Q46. Luminous flux is
 A.  the light energy radiated by sun
 [Wrong Answer]
 B.  the part of light energy, radiated by sun, which is received on the earth
 [Wrong Answer]
 C.  the rate of energy radiation in the form of light waves
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2189’).click(function(){
qid2189=$(‘#qid2189’).val();
section2189=$(‘#section2189’).val();
type2189=$(‘#type2189’).val();
subtype2189=$(‘#subtype2189’).val();
$.post(‘../../fav’,{ qid:qid2189, section: section2189, type: type2189, subtype: subtype2189 },function(ajaxresult){
$(‘#getrequest2189’).html(ajaxresult);

qid2189=$(‘#qid2189’).val(”);
section2189=$(‘#section2189’).val(”);
type2189=$(‘#type2189’).val(”);
subtype2189=$(‘#subtype2189’).val(”);
});
});
});

 

Q47. Sky appears blue because of
 A.  refraction
 [Wrong Answer]
 B.  reflection
 [Wrong Answer]
 C.  radiation
 [Wrong Answer]
 D.  scattering of light over dust parti­cles
 [Correct Answer]
$(document).ready(function(){
$(‘#loaddata2190’).click(function(){
qid2190=$(‘#qid2190’).val();
section2190=$(‘#section2190’).val();
type2190=$(‘#type2190’).val();
subtype2190=$(‘#subtype2190’).val();
$.post(‘../../fav’,{ qid:qid2190, section: section2190, type: type2190, subtype: subtype2190 },function(ajaxresult){
$(‘#getrequest2190’).html(ajaxresult);

qid2190=$(‘#qid2190’).val(”);
section2190=$(‘#section2190’).val(”);
type2190=$(‘#type2190’).val(”);
subtype2190=$(‘#subtype2190’).val(”);
});
});
});

 

Q48. The level of illumination on a surface least depends on
 A.  ambient temperature
 [Correct Answer]
 B.  candle power of the source
 [Wrong Answer]
 C.  distance of the source
 [Wrong Answer]
 D.  type of reflector used
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2191’).click(function(){
qid2191=$(‘#qid2191’).val();
section2191=$(‘#section2191’).val();
type2191=$(‘#type2191’).val();
subtype2191=$(‘#subtype2191’).val();
$.post(‘../../fav’,{ qid:qid2191, section: section2191, type: type2191, subtype: subtype2191 },function(ajaxresult){
$(‘#getrequest2191’).html(ajaxresult);

qid2191=$(‘#qid2191’).val(”);
section2191=$(‘#section2191’).val(”);
type2191=$(‘#type2191’).val(”);
subtype2191=$(‘#subtype2191’).val(”);
});
});
});

 

Q49. Filament lamps operate normally at a power factor of
 A.  0.5 lagging
 [Wrong Answer]
 B.  0.8 lagging
 [Wrong Answer]
 C.  unity
 [Correct Answer]
 D.  0.8 leading
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2192’).click(function(){
qid2192=$(‘#qid2192’).val();
section2192=$(‘#section2192’).val();
type2192=$(‘#type2192’).val();
subtype2192=$(‘#subtype2192’).val();
$.post(‘../../fav’,{ qid:qid2192, section: section2192, type: type2192, subtype: subtype2192 },function(ajaxresult){
$(‘#getrequest2192’).html(ajaxresult);

qid2192=$(‘#qid2192’).val(”);
section2192=$(‘#section2192’).val(”);
type2192=$(‘#type2192’).val(”);
subtype2192=$(‘#subtype2192’).val(”);
});
});
});

 

Q50. Carbon arc lamps are commonly used in
 A.  photography
 [Wrong Answer]
 B.  cinema projectors
 [Correct Answer]
 C.  domestic lighting
 [Wrong Answer]
 D.  street lighting
 [Wrong Answer]
$(document).ready(function(){
$(‘#loaddata2193’).click(function(){
qid2193=$(‘#qid2193’).val();
section2193=$(‘#section2193’).val();
type2193=$(‘#type2193’).val();
subtype2193=$(‘#subtype2193’).val();
$.post(‘../../fav’,{ qid:qid2193, section: section2193, type: type2193, subtype: subtype2193 },function(ajaxresult){
$(‘#getrequest2193’).html(ajaxresult);

qid2193=$(‘#qid2193’).val(”);
section2193=$(‘#section2193’).val(”);
type2193=$(‘#type2193’).val(”);
subtype2193=$(‘#subtype2193’).val(”);
});
});
});

 

ONLINE MCQ EE-ILLUMINATION 6
ONLINE MCQ EE-ILLUMINATION 4

Leave a Reply