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Admittance relay is
impedance relay
non-directional relay
None of these
directional relay
impedance relay
non-directional relay
None of these
directional relay
Answer
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Overheating of relay contacts or contact born out is due to
too low contact pressure
foreign matter on the contact surface
all of these
slow making and breaking of load circuit contacts
too low contact pressure
foreign matter on the contact surface
all of these
slow making and breaking of load circuit contacts
Answer
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If the fault occurs near the impedance relay, the V/ I ratio will be
constant for all distances
higher than that of if fault occurs away from the relay
Lower than that of if fault occurs away from the relay
None of these
constant for all distances
higher than that of if fault occurs away from the relay
Lower than that of if fault occurs away from the relay
None of these
Answer
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An efficient and a well designed protective relaying should have
economy and simplicity
All of these
good selectivity and reliability
high speed and selectivity
economy and simplicity
All of these
good selectivity and reliability
high speed and selectivity
Answer
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Dc shunt relays are made of
many turns of thin wire
few turns of thick wire
few turns of thin wire
many turns of thick wire
many turns of thin wire
few turns of thick wire
few turns of thin wire
many turns of thick wire
Answer
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A fuse is never inserted in
positive of dc circuit
phase line
negative of dc circuit
neutral wire
positive of dc circuit
phase line
negative of dc circuit
neutral wire
Answer
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