Switchgear and Protection – HI MCQ!

SF6 gas?

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Which of the following medium is employed for extinction of arc in air circuit breaker?

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A differential relay responds to?

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The inductive interference between power and communication line can be minimized by?

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The use of oil immersed reactors is generally restricted upto?

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Which of the following protective devices can be use against lightning surges?

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Outdoor switchgear is generally used for voltage beyond?

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With which of the following, a circuit breaker must be equipped for remote operation?

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The most serious result of a major uncleared short-circuit fault could be?

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The main factor, in favour of the use of aluminium as bus-bar material is its?

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