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GETCO Exam Paper (11-06-2017)

GETCO Exam Paper (11-06-2017)
For the protection of power system against travelling waves, we use

None of these
earthing screens
surge diverters
overhead ground wires

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GETCO Exam Paper (11-06-2017)
If the reading of two wattmeters are equal and positive in two wattmeter method, the load power factor in abalanced 3-phase 3-wire circuit will be

0.5
zero
unity
0.866

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

W1 = W2 (+Ve) → PF = 1
W1, W2 Positive → PF > 0.5
W1 +Ve, W2 = 0 → PF = 0.5
W1 +Ve, W2 = -Ve → PF < 0.5
W1 = - W2 → PF = 0

GETCO Exam Paper (11-06-2017)
The booster is inserted in the circuit to

reduce current
reduce voltage drop
compensate for voltage drop
increase current

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GETCO Exam Paper (11-06-2017)
The efficiency of solar cell is about

0.6
0.15
0.25
0.4

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GETCO Exam Paper (11-06-2017)
The function of a surge tank is to

supply water at constant pressure
produce surge in the pipeline
relieve water hammer pressure in the penstock pipe
none

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GETCO Exam Paper (11-06-2017)
If the effect of earth is taken into account, then the capacitance of line to ground

increases
becomes infinite
remains unaltered
decreases

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MORE MCQ ON GETCO Exam Paper (11-06-2017)

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