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protection of fuses is generally not used beyond

50 A
200 A
100 A
20 A

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HRC fuses provide best protection against

short circuits
overload
reverse current
open circuits

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The device that detects the fault in a power system is

circuit breaker
None of these
relay
isolator

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

reactors
capacitors
None of these
resistors

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A fuse should have

All of these
low cost
low melting point
high conductivity

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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

1500/√3 A
750 A
None of these
1500 A

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