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Admittance relay is

non-directional relay
impedance relay
None of these
directional relay

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The rate of rise of restriking voltage depends on

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

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The operating time of a fuse is about

0.8 sec
1 sec
1.5 sec
0.002 sec

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A circuit breaker is rated as 1500 A, 1000 MVA, 33 kv, 3-second , 3- phase oil circuit breaker. The rated normal current is

750 A
1500/√3 A
None of these
1500 A

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

capacitors
None of these
reactors
resistors

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Air blast circuit breaker is used for

intermittent duty
repeated duty
over currents
short duty

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