ONLINE MCQ EE-TRANSMISSION AND DISTRIBUTION 8

Q71. Which of the following is not a constituent
for making porcelain insulators ?
 A.  Quartz
 [Wrong Answer]
 B.  Kaolin
 [Wrong Answer]
 C.  Felspar
 [Wrong Answer]
 D.  Silica
 [Correct Answer]
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Q72. A conductor due to sag between two
supports, takes the form of
 A.  semi-circle
 [Wrong Answer]
 B.  triangle
 [Wrong Answer]
 C.  ellipse
 [Wrong Answer]
 D.  catenary
 [Correct Answer]
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Q73. In a substation the following equipment
is not installed
 A.  exciters
 [Correct Answer]
 B.  series capacitors
 [Wrong Answer]
 C.  shunt reactors
 [Wrong Answer]
 D.  voltage transformers
 [Wrong Answer]
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Q74. Which of the following equipment, for
regulating the voltage in distribution
feeder, will be most economical ?
 A.  Static condenser
 [Wrong Answer]
 B.  Synchronous condenser
 [Wrong Answer]
 C.  Tap changing transformer
 [Wrong Answer]
 D.  Booster transformer
 [Correct Answer]
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Q75. When an alternator connected to the
bus-bar is shut, down the bus-bar voltage
will
 A.  fall
 [Wrong Answer]
 B.  rise
 [Wrong Answer]
 C.  remain unchanged
 [Correct Answer]
 D.  none of the above
 [Wrong Answer]
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Q76. By which of the following methods voltage
of transmission can be regulated ?
 A.  Use of series capacitors to neutralise
the effect of series reactance
 [Wrong Answer]
 B.  Switching in shunt capacitors at the
receiving end during heavy loads
 [Wrong Answer]
 C.  Use of tap changing transformers
 [Wrong Answer]
 D.  Any of the above methods
 [Correct Answer]
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Q77. In context of corona, if the conductors
are polished and smooth, which of the
following statements is correct ?
 A.  Hissing sound will be more intense
 [Wrong Answer]
 B.  Power loss will be least
 [Wrong Answer]
 C.  Corona glow will be uniform along
the length of the conductor
 [Correct Answer]
 D.  Corona glow will not occur
 [Wrong Answer]
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Q78. Which of the following are connected by
the service mains ?
 A.  Transformer and earth
 [Wrong Answer]
 B.  Distributor and relay system
 [Wrong Answer]
 C.  Distributor and consumer terminals
 [Correct Answer]
 D.  Distributor and transformer
 [Wrong Answer]
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Q79. By which of the following factors is the
sag of a transmission line least affected
?
 A.  Current through the conductor
 [Correct Answer]
 B.  Ice deposited on the conductor
 [Wrong Answer]
 C.  Self weight of conductor
 [Wrong Answer]
 D.  Temperature of surrounding air
 [Wrong Answer]
 E.  None of the above
 [Wrong Answer]
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Q80. A synchronous condenser is generally
installed at the of the ____ transmission
line
 A.  receiving end
 [Correct Answer]
 B.  sending end
 [Wrong Answer]
 C.  middle
 [Wrong Answer]
 D.  none of the above
 [Wrong Answer]
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ONLINE MCQ EE-TRANSMISSION AND DISTRIBUTION 9
ONLINE MCQ EE-TRANSMISSION AND DISTRIBUTION 7

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