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An efficient and a well designed protective relaying should have
high speed and selectivity
economy and simplicity
All of these
good selectivity and reliability
high speed and selectivity
economy and simplicity
All of these
good selectivity and reliability
Answer
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Related Question
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series reactors should have
high impedance
low resistance
low impedance
high resistance
high impedance
low resistance
low impedance
high resistance
Answer
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The relay operating coil is supplied through
fuse
None of these
power transformer
current transformer
fuse
None of these
power transformer
current transformer
Answer
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Relay can be designed to respond to changes in
resistance, reactance and impedance
voltage and current
All of these
temperature
resistance, reactance and impedance
voltage and current
All of these
temperature
Answer
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The reflection co-efficient at the open circuited end of a transmission line
infinity
unity
None of these
zero
infinity
unity
None of these
zero
Answer
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________ relay is preferred for phase fault on short transmission line.
Impedance
Induction type
Reactance
None of these
Impedance
Induction type
Reactance
None of these
Answer
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