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Admittance relay is

None of these
non-directional relay
directional relay
impedance relay

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The short circuit in any winding of the transformer is the result of

insulation failure
mechanical vibration
impulse voltage
loose connection

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If the length of the arc in a circuit breaker increases, its resistance

decreases
increases
None of these
remains same

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Which of the following circuit breakers is prefered for EHT applications ?

bulk oil circuit breaker
low oil circuit breaker
air break circuit breaker
Sf6 CB

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Relay can be designed to respond to changes in

resistance, reactance and impedance
voltage and current
temperature
All of these

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For interrupting of high voltage and low current, the circuit breaker prefered is

oil circuit breaker
all are correct
air-blast circuit breaker
vaccum circuit breaker

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