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Switch Gear

Switch Gear
The relay operating coil is supplied through

power transformer
fuse
current transformer
None of these

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The rate of rise of restriking voltage depends on

the inductance of the system only
both inductance and capacitance of the system
the type of circuit breaker
the capacitance of the system only

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Switch Gear
The information to the circuit breaker under fault conditions is provided by

rewirable fuse
H.R.'only
All of these
relay

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Air blast circuit breaker is used for

intermittent duty
over currents
short duty
repeated duty

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Series capacitors are used to

None of these
improve line voltage
compensate for line inductive reactance
compensate for line capacitive reactance

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Wave trap is used to trap waves of

higher frequencies entering generator or transformer units
power frequencies
either of the above
None of these

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