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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
For formation of the Y bus matrix (using node voltage analysis) in power system network modelling _____ is used

all are correct
Faraday's law
KVL
KCL

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GETCO Exam Paper (22-07-2015)
Calculate torque developed by the 3-phase, 5 HP, 4 pole induction motor runs at 1500 rpm

22 N-m
0 N-m
23.5 N-m
10 N-m

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

P = 2πTN/60 where N is speed in rpm

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

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

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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?

TRS cable
PVC cable
VIR cable
XLPE cable

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GETCO Exam Paper (22-07-2015)
100% string efficiency means

None uniform potential distribution across each disc
Zero potential across each disc
Equal potential across each disc
One of the insulator discs shorted

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GETCO Exam Paper (22-07-2015)
Light from the nearest star (other than the sun) reaches the earth in

4.2 years
4.2 minutes
4.2 hours
42 secs

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