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.Management Sciences
A. Lightning arrestors are used before the switchgear
B. Shunt reactors are used as compensation reactors
C. The peak short current is (1.8 xV2) times the A.C. component
D. The MVA at fault is equal to base MVA divided by per unit equivalent fault reactance
Related Mcqs:
- 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...
- The current zero interruption, in oil and air blast circuit breakers, is achieved by_______________?
- A. lengthening of the gap B. cooling and blast effect C. both A. and B D. deionizing the oil with forced air E. none of the above...
- The reflection co-efficient at the open circuited end of a transmission line___________?
- A. zero B. infinity C. unity D. none of the above...
- Which of the following parameter can be neglected for a short line ?
- A. Inductance B. Capacitance C. Resistance D. Reactance...
- A short-circuit is identified by_____________?
- A. no current flow B. heavy current flow C. voltage drop D. voltage rise...
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