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series reactors should have
high resistance
low resistance
low impedance
high impedance
high resistance
low resistance
low impedance
high impedance
Answer
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For which of the following protection from negative sequence currents is provided ?
Generators
Transmission line
Motors
Transformers
Generators
Transmission line
Motors
Transformers
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Which of the following circuit breakers is prefered for EHT applications ?
air break circuit breaker
bulk oil circuit breaker
Sf6 CB
low oil circuit breaker
air break circuit breaker
bulk oil circuit breaker
Sf6 CB
low oil circuit breaker
Answer
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To reduce short circuit fault currents......... are used.
reactors
resistors
None of these
capacitors
reactors
resistors
None of these
capacitors
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Arc in a circuit breaker is interrupted at
maximum voltage
maximum current
zero current
minimum voltage
maximum voltage
maximum current
zero current
minimum voltage
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The device that detects the fault in a power system is
relay
circuit breaker
None of these
isolator
relay
circuit breaker
None of these
isolator
Answer
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