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

resistors
reactors
None of these
capacitors

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A fuse is never inserted in

negative of dc circuit
neutral wire
phase line
positive of dc circuit

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The arcing contacts in a circuit breaker are made of

aluminium alloy
electrolytic copper
copper tungsten alloy
porcelain

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A.C. network analyzer is used to solve problems of

Load flow, short-circuit and stability
Load flow and short-circuit
Load flow
Load flow and stability

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A differential relay measures the vector difference between

two voltages
two or more similar electrical quantities
two currents
None of these

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Admittance relay is

impedance relay
None of these
directional relay
non-directional relay

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