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A short-circuit is identified by

no current flow
heavy current flow
voltage rise
voltage drop

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Outdoor switchgear is generally used for voltage beyond

11 kV
66 kV
33 kV
132 kV

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Directional relay are based on flow of

current
All of these
voltage wave
power

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The time-current graph of a fuse

is a circle
has a linear characteristic
None of these
has inverse characteristic

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To reduce short circuit fault currents......... are used.

reactors
capacitors
None of these
resistors

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A fuse performs

circuit interruption function only
detection function only
None of these
both detection and interruption functions

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