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Circuit breakers usually operate under
transient state of short circuit current
sub-transient state of short circuit current
after dc component has ceased
steady state of short circuit current
transient state of short circuit current
sub-transient state of short circuit current
after dc component has ceased
steady state of short circuit current
Answer
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Related Question
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The main function of a fuse is to
None of these
protect the line
open the circuit
prevent excessive currents
protect the appliance
None of these
protect the line
open the circuit
prevent excessive currents
protect the appliance
Answer
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When a fault occur in a power system, the circuit breaker
is opened manually
opens automatically
is opened by remote control
None of these
is opened manually
opens automatically
is opened by remote control
None of these
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Arc in a circuit breaker is interrupted at
minimum voltage
maximum current
zero current
maximum voltage
minimum voltage
maximum current
zero current
maximum voltage
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Interruption of large currents by relay requires
wide separation of the opened contacts
all of these
arc suppressing blow out coils
high speed opening of contacts
wide separation of the opened contacts
all of these
arc suppressing blow out coils
high speed opening of contacts
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A fuse is a
current limiting device
None of these
protective device
current controlling device
current limiting device
None of these
protective device
current controlling device
Answer
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