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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
The magnitude of sum of two sinusoidal AC voltages is equal to the magnitude of each individual voltage, What must be the phase difference between voltages?

60
180
90
120

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GETCO Exam Paper (22-07-2015)
The insulation strength of an EHV transmission line is mainly governed by

Corona
Harmonics
Switching over voltages
Load power factor

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GETCO Exam Paper (22-07-2015)
Which of the following cable is extensively used for high tension and low tension work?

VIR cable
TRS cable
PVC cable
XLPE cable

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GETCO Exam Paper (22-07-2015)
The fault occurring in transmission actually are mostly

L-L-G
L-G
L-L
L-L-L

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GETCO Exam Paper (22-07-2015)
Two watt meter method for 3 phase circuit is preferred over other methods because

PF of the load can also be estimated
it can be used for balanced or unbalanced load
all are correct
it can be used for star or delta connected load

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GETCO Exam Paper (22-07-2015)
Switching surges are

high votage DCs
short duration transient voltage
high voltage Acs
power frequency voltage

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MORE MCQ ON GETCO Exam Paper (22-07-2015)

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