Which of the following circuit breakers has high reliability and minimum maintenance ?

Related Mcqs:

With which of the following, a circuit breaker must be equipped for remote operation ?

A. Inverse time trip B. Time-delay trip C. Shunt trip D. None of the above E. All of the above...

Circuit breakers usually operate under______________?

A. transient state of short-circuit current B. sub-transient state of short-circuit current C. steady state of short-circuit current D. after D.C. component has ceased...

Which of the following is the least expensive protection for overcurrent is low voltage system ?

A. Rewireable fuse B. Isolator C. Oil circuit breaker D. Air break circuit breaker E. None of the above...

What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?

A. Zero B. Unity C. Infinity D. None of the above...

On which of the following effects of electric current a fuse operates ?

A. Photoelectric effect B. Electrostatic effect C. Heating effect D. Magnetic effect...