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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
Oil is mostly _____ by trucks in India

transmit
transfer
transport
deliver

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GETCO Exam Paper (22-07-2015)
Which of the following breaking method save energy?

regenerative breaking
resistor breaking
dynamic breaking
plugging

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

three types of electric breaking:
Regenerative breaking( leads to economic and energy consevation)
pugging (more efficient method of breaking)
rheostatic breaking

GETCO Exam Paper (22-07-2015)
For a given transformer volte/turn for primary and secondary winding is

depends on load
depends on transformer design
different
same

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

emf = 4.44*f*φ*T
emf/T = 4.44*f*φ

GETCO Exam Paper (22-07-2015)
For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be

5\6
6\7
2\3
7\8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

fractional pitch = Cos( α/2)
α is obtain from: (nα/2)=90˚ where n is harmonic
α=25.7143˚
fractional pitch=6/7

GETCO Exam Paper (22-07-2015)
Normally the angle of the transmission line is kept _____ because of _____ reasons

90, transient stability
45, transient stability
90, steady state stability
45, steady state stability

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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

200
300
150
100

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

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