GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
The value of holding ratio of relay is always

greater than 1

less than 1

zero

Infinite

greater than 1

less than 1

zero

Infinite

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

resistor breaking

dynamic breaking

regenerative breaking

plugging

resistor breaking

dynamic breaking

regenerative breaking

plugging

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GETCO Exam Paper (22-07-2015)
Root Locus is locus of the _____

open loop poles to open loop zeros

open loop zeros to close poles

close loop poles to close loop zeros

close loop poles

open loop poles to open loop zeros

open loop zeros to close poles

close loop poles to close loop zeros

close loop poles

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GETCO Exam Paper (22-07-2015)
The instantaneous value of power in purely inductive circuit is

constant

zero

none of this

changing

constant

zero

none of this

changing

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GETCO Exam Paper (22-07-2015)
The fault occurring in transmission actually are mostly

L-L-G

L-G

L-L-L

L-L

L-L-G

L-G

L-L-L

L-L

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GETCO Exam Paper (22-07-2015)
Earth wire on EHV overhead transmission line is provided to protect the line against

lightning surge

corona effect

excessive fault voltages

switching surge

lightning surge

corona effect

excessive fault voltages

switching surge

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