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GETCO Exam Paper (22-07-2015)

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

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

P = 2πTN/60 where N is speed in rpm

GETCO Exam Paper (22-07-2015)
Merz-Price protection is employed for protection of

circuit breaker
transmission lines
motor
alternators

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GETCO Exam Paper (22-07-2015)
An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is

300
200
100
150

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GETCO Exam Paper (22-07-2015)
In the standard B-H curve X axis and Y axis intercepts respctively represents

coercive force and residual magnetism
Flux and MMF
Hysteresis loss and Flux
residual magnetism and coercive force

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GETCO Exam Paper (22-07-2015)
Current chopping phenomenon is related to

resistance switching
capacitance switching
asymmetrical current
small inductive current

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

KVL
Faraday's law
all are correct
KCL

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

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