# ONLINE MCQ EE-TRANSMISSION AND DISTRIBUTION 5

Q41. The purpose of using a booster is to
A.  increase current
B.  reduce current
C.  reduce voltage drop
D.  compensate for voltage drop
E.  none of the above
 \$(document).ready(function(){ \$(‘#loaddata3948’).click(function(){ qid3948=\$(‘#qid3948’).val(); section3948=\$(‘#section3948’).val(); type3948=\$(‘#type3948’).val(); subtype3948=\$(‘#subtype3948’).val(); \$.post(‘../../fav’,{ qid:qid3948, section: section3948, type: type3948, subtype: subtype3948 },function(ajaxresult){ \$(‘#getrequest3948’).html(ajaxresult); qid3948=\$(‘#qid3948’).val(”); section3948=\$(‘#section3948’).val(”); type3948=\$(‘#type3948’).val(”); subtype3948=\$(‘#subtype3948’).val(”); }); }); }); Explanation:- Answer : D
Q42. Which of the following can be used for
bus-bars ?
A.  Tubes
B.  Rods
C.  Bars
D.  Any of the above
 \$(document).ready(function(){ \$(‘#loaddata3949’).click(function(){ qid3949=\$(‘#qid3949’).val(); section3949=\$(‘#section3949’).val(); type3949=\$(‘#type3949’).val(); subtype3949=\$(‘#subtype3949’).val(); \$.post(‘../../fav’,{ qid:qid3949, section: section3949, type: type3949, subtype: subtype3949 },function(ajaxresult){ \$(‘#getrequest3949’).html(ajaxresult); qid3949=\$(‘#qid3949’).val(”); section3949=\$(‘#section3949’).val(”); type3949=\$(‘#type3949’).val(”); subtype3949=\$(‘#subtype3949’).val(”); }); }); }); Explanation:- Answer : D
Q43. Conductors for high voltage transmission
lines are suspended from towers
to
A.  increase clearance from ground
B.  reduce clearance from ground
C.  take care of extension in length
during summer
D.  reduce wind and snow loads
E.  none of the above
 \$(document).ready(function(){ \$(‘#loaddata3950’).click(function(){ qid3950=\$(‘#qid3950’).val(); section3950=\$(‘#section3950’).val(); type3950=\$(‘#type3950’).val(); subtype3950=\$(‘#subtype3950’).val(); \$.post(‘../../fav’,{ qid:qid3950, section: section3950, type: type3950, subtype: subtype3950 },function(ajaxresult){ \$(‘#getrequest3950’).html(ajaxresult); qid3950=\$(‘#qid3950’).val(”); section3950=\$(‘#section3950’).val(”); type3950=\$(‘#type3950’).val(”); subtype3950=\$(‘#subtype3950’).val(”); }); }); }); Explanation:- Answer : A
Q44. The electrostatic stress in underground
cables is
A.  zero at the conductor as well as on
the sheath
B.  same at the conductor and sheath
C.  minimum at the conductor and
minimum at the sheath
D.  maximum at the conductor and
minimum at the sheath
 \$(document).ready(function(){ \$(‘#loaddata3951’).click(function(){ qid3951=\$(‘#qid3951’).val(); section3951=\$(‘#section3951’).val(); type3951=\$(‘#type3951’).val(); subtype3951=\$(‘#subtype3951’).val(); \$.post(‘../../fav’,{ qid:qid3951, section: section3951, type: type3951, subtype: subtype3951 },function(ajaxresult){ \$(‘#getrequest3951’).html(ajaxresult); qid3951=\$(‘#qid3951’).val(”); section3951=\$(‘#section3951’).val(”); type3951=\$(‘#type3951’).val(”); subtype3951=\$(‘#subtype3951’).val(”); }); }); }); Explanation:- Answer : D
Q45. The charging current in the cables
A.  leads the voltage by 180°
B.  leads the voltage by 90°
C.  lags the voltage by 90°
D.  lags the voltage by 180°
 \$(document).ready(function(){ \$(‘#loaddata3952’).click(function(){ qid3952=\$(‘#qid3952’).val(); section3952=\$(‘#section3952’).val(); type3952=\$(‘#type3952’).val(); subtype3952=\$(‘#subtype3952’).val(); \$.post(‘../../fav’,{ qid:qid3952, section: section3952, type: type3952, subtype: subtype3952 },function(ajaxresult){ \$(‘#getrequest3952’).html(ajaxresult); qid3952=\$(‘#qid3952’).val(”); section3952=\$(‘#section3952’).val(”); type3952=\$(‘#type3952’).val(”); subtype3952=\$(‘#subtype3952’).val(”); }); }); }); Explanation:- Answer : B
Q46. The underground system cannot be
operated above
A.  440 V
B.  11 kV
C.  33 kV
D.  66 kV
 \$(document).ready(function(){ \$(‘#loaddata3953’).click(function(){ qid3953=\$(‘#qid3953’).val(); section3953=\$(‘#section3953’).val(); type3953=\$(‘#type3953’).val(); subtype3953=\$(‘#subtype3953’).val(); \$.post(‘../../fav’,{ qid:qid3953, section: section3953, type: type3953, subtype: subtype3953 },function(ajaxresult){ \$(‘#getrequest3953’).html(ajaxresult); qid3953=\$(‘#qid3953’).val(”); section3953=\$(‘#section3953’).val(”); type3953=\$(‘#type3953’).val(”); subtype3953=\$(‘#subtype3953’).val(”); }); }); }); Explanation:- Answer : D
Q47. Which of the following is the source of
heat generation in the cables ?
A.  Dielectric losses in cable insulation
B.  IR losses in the conductor
C.  Losses in the metallic sheathings
and armourings
D.  All of the above
 \$(document).ready(function(){ \$(‘#loaddata3954’).click(function(){ qid3954=\$(‘#qid3954’).val(); section3954=\$(‘#section3954’).val(); type3954=\$(‘#type3954’).val(); subtype3954=\$(‘#subtype3954’).val(); \$.post(‘../../fav’,{ qid:qid3954, section: section3954, type: type3954, subtype: subtype3954 },function(ajaxresult){ \$(‘#getrequest3954’).html(ajaxresult); qid3954=\$(‘#qid3954’).val(”); section3954=\$(‘#section3954’).val(”); type3954=\$(‘#type3954’).val(”); subtype3954=\$(‘#subtype3954’).val(”); }); }); }); Explanation:- Answer : D
Q48. The distributors for residential areas
are
A.  single phase
B.  three-phase three wire
C.  three-phase four wire
D.  none of the above
 \$(document).ready(function(){ \$(‘#loaddata3955’).click(function(){ qid3955=\$(‘#qid3955’).val(); section3955=\$(‘#section3955’).val(); type3955=\$(‘#type3955’).val(); subtype3955=\$(‘#subtype3955’).val(); \$.post(‘../../fav’,{ qid:qid3955, section: section3955, type: type3955, subtype: subtype3955 },function(ajaxresult){ \$(‘#getrequest3955’).html(ajaxresult); qid3955=\$(‘#qid3955’).val(”); section3955=\$(‘#section3955’).val(”); type3955=\$(‘#type3955’).val(”); subtype3955=\$(‘#subtype3955’).val(”); }); }); }); Explanation:- Answer : C
Q49. In transmission lines the cross-arms
A.  copper
B.  wood
C.  R.C.C.
D.  steel
 \$(document).ready(function(){ \$(‘#loaddata3956’).click(function(){ qid3956=\$(‘#qid3956’).val(); section3956=\$(‘#section3956’).val(); type3956=\$(‘#type3956’).val(); subtype3956=\$(‘#subtype3956’).val(); \$.post(‘../../fav’,{ qid:qid3956, section: section3956, type: type3956, subtype: subtype3956 },function(ajaxresult){ \$(‘#getrequest3956’).html(ajaxresult); qid3956=\$(‘#qid3956’).val(”); section3956=\$(‘#section3956’).val(”); type3956=\$(‘#type3956’).val(”); subtype3956=\$(‘#subtype3956’).val(”); }); }); }); Explanation:- Answer : D
Q50. Transmitted power remaining the
same, if supply voltage of a D.C. 2-wire
feeder is increased 100 percent, saving
in copper is
A.  25 percent