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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
Who is the vice president of India? (As on 22/07/2015)

Pranav Mukharjee
Dr. Hamid Ansari
O.P. Kohli
Nazama heptulla

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GETCO Exam Paper (22-07-2015)
In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for

as power transformer
protection purpose
measuring purpose
both measuring and protection

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

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

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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

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

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P = 2πTN/60 where N is speed in rpm

GETCO Exam Paper (22-07-2015)
A transformer has negative voltage regulation when its load PF is

leading
unity
lagging
zero

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Voltage regulation = ((no load voltage)-(full load voltage)/(no load voltage))
VR at leading PF = ((I*R*cosφ)-(I*X*sinφ))/V
VR at lagging PF = ((I*R*cosφ)+(I*X*sinφ))/V

GETCO Exam Paper (22-07-2015)
"Overshoot" in a time response of control systems is indication of

none of this
measure of relative stability
final value of the output
steady state solution

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

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