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Switch Gear

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

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

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Switch Gear
Resistance grounding is used for voltage between

None of these
11 kv to 33 kv
33 kV to 66 kV
3.3 kV to 11 kv

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Switch Gear
A three phase circuit breaker is rated at 2000 MVA, 33 kv. The symmetrical breaking current is

80 kA
60 kA
35 kA
20 kA

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Switch Gear
________ relay is preferred for phase fault on short transmission line.

Induction type
Impedance
Reactance
None of these

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Switch Gear
The torque produced in induction type relay is

inversely proportional to the square of the current
proportional to the current
proportional to square of the current
inversely proportional to the current

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Switch Gear
The relay operating coil is supplied through

power transformer
current transformer
None of these
fuse

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