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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
Shunt compensation in EHV line is resorted to

Increase line impedance
Improve voltage profile
Reduce the fault level
Improve the stability

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GETCO Exam Paper (22-07-2015)
Penalty factor in power system economical operation is measure of

fuel cost
Line loss
generation cost
all are correct

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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

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

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P = 2πTN/60 where N is speed in rpm

GETCO Exam Paper (22-07-2015)
When the load is suddenly increased in the receiving end of the system, the phase shift will

increase
remains same
Not affected
decrease

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GETCO Exam Paper (22-07-2015)
In sub stations for making and breaking of load current

load interrupter switches are used
circuit breakers are used
isolators are used
relays are used

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GETCO Exam Paper (22-07-2015)
The steady state stability of the power systems is most effected by

stability of generator
voltage at generator bus
transmission line reactance
power factor of the load

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

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