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.Management Sciences
A. current carrying contacts called electrodes
B. arc extinguishers
C. circuits to break the system
D. transformers to isolate the two systems
E. any of the above
Related Mcqs:
- Which of the following medium is employed for extinction of arc in air circuit breaker?
- A. Water B. Oil C. Air D. SF6...
- The voltage appearing across the contacts after opening of the circuit breaker is called__________voltage
- A. recovery B. surge C. operating D. arc E. none of the above...
- The arc voltage produced in A.C. circuit breaker is always_____________?
- A. in phase with the arc current B. lagging the arc current by 90″ C. leading the arc current by 90° D. none of the above...
- Over voltage protection is recommended for______________?
- A. hydro-electric generators B. steam turbine generators C. gas turbine generators D. all of the above E. none of the above...
- The torque produced in induction type relay (shaded pole structure) is_____________?
- A. inversely proportional to the current B. inversely proportional to the square of the current C. proportional to the current D. proportional to square of the current...
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