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A fuse should have
low melting point
All of these
high conductivity
low cost
low melting point
All of these
high conductivity
low cost
Answer
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Related Question
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A circuit breaker must perform the duty of
carrying fault current for a short time
being closed on to a fault
opening the faulty circuit and breaking the fault current
All of these
carrying fault current for a short time
being closed on to a fault
opening the faulty circuit and breaking the fault current
All of these
Answer
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The fusing factor is
None of these
always less than 1
always more than 1
always 1
None of these
always less than 1
always more than 1
always 1
Answer
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Air blast circuit breakers for 400 kV power system are designed to operate in
100 micro-second
50 milli-second
0.1 sec
0.5 sec
100 micro-second
50 milli-second
0.1 sec
0.5 sec
Answer
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The normal current in a power line is 100 A. If a short-circuit fault occurs on the line, then one can expect the short-circuit current to be
more than 1000 A
200 A
100 A
300 A
more than 1000 A
200 A
100 A
300 A
Answer
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Relay can be designed to respond to changes in
All of these
voltage and current
resistance, reactance and impedance
temperature
All of these
voltage and current
resistance, reactance and impedance
temperature
Answer
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