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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
The breaking capacity of a CB is usually expressed interms of

MW
MVA
volts
amperes

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

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

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GETCO Exam Paper (22-07-2015)
Which of the following award was not awarded to late Dr. Abdul Kalam?

Veer Chakra
Padma Vibhushan
Padma Bhusan
Bharat Ratna

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GETCO Exam Paper (22-07-2015)
The Z matrix of 2 port network is given by [0.9 0.2 : 0.2 0.6]. The element Y22 of the corresponding Y matrix of the same network is given by

-0.4
0.4
1.8
1.2

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

leading
zero
lagging
unity

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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)
Earth wire on EHV overhead transmission line is provided to protect the line against

excessive fault voltages
switching surge
lightning surge
corona effect

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

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