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GETCO Exam Paper (11-06-2017)

GETCO Exam Paper (11-06-2017)
Which of the following relays is used on long transmission lines?

None
Impedance relay
Reactance relay
Mho's relay

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GETCO Exam Paper (11-06-2017)
The efficiency of a nuclear power plant is less than that of a conventional fuel fired thermal plant because of

higher pressure conditions
higher temperature conditions
less rejection of heat in the condenser
low temperature and pressure conditions

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GETCO Exam Paper (11-06-2017)
Effect of temperature rise in overhead lines is to

decrease the sag and increase the tension
increase both
decrease both
increase the sag and decrease the tension

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GETCO Exam Paper (11-06-2017)
If the effect of earth is taken into account, then the capacitance of line to ground

decreases
increases
becomes infinite
remains unaltered

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GETCO Exam Paper (11-06-2017)
A fuse is

never inserted in neutral wire
never inserted in phase wire
normally inserted in phase wire
normally inserted in neutral wire

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GETCO Exam Paper (11-06-2017)
A synchronous condenser is virtually a/an

under-excited synchronous motor
commutatr motor
induction motor
over-excited synchronous motor

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Synchronous motor operate at no load with over excitation it behave as synchronous capacitor
supply reactive power at leading power factor

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