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The advantage of HRC fuse is that it
is quite cheap
has high speed of operation
All of these
does not deteriorate with age
is quite cheap
has high speed of operation
All of these
does not deteriorate with age
Answer
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The arc voltage produced in AC circuit breaker is always
leading the arc current by 90°
lagging the arc current by 90°
None of these
In phase with the arc current
leading the arc current by 90°
lagging the arc current by 90°
None of these
In phase with the arc current
Answer
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Current chopping mainly occurs in
oil circuit breaker
air-blast circuit breaker
vaccum circuit breaker
sf 6 circuit breaker
oil circuit breaker
air-blast circuit breaker
vaccum circuit breaker
sf 6 circuit breaker
Answer
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Arc in a circuit breaker is interrupted at
zero current
maximum voltage
minimum voltage
maximum current
zero current
maximum voltage
minimum voltage
maximum current
Answer
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The transient voltage that appears across the contacts at the instant of arc extinction is called
restriking voltage
peak voltage
supply voltage
recovery voltage
restriking voltage
peak voltage
supply voltage
recovery voltage
Answer
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A.C. network analyzer is used to solve problems of
Load flow, short-circuit and stability
Load flow and short-circuit
Load flow
Load flow and stability
Load flow, short-circuit and stability
Load flow and short-circuit
Load flow
Load flow and stability
Answer
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