Power Systems In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)? 3.5 × 106 kV / sec. 1 × 106 kV / sec. 2 × 106 kV / sec. 3 × 106 kV / sec. 3.5 × 106 kV / sec. 1 × 106 kV / sec. 2 × 106 kV / sec. 3 × 106 kV / sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conversion ratio of breeder reactor are less than 1. none of above. greater than 1. 1. less than 1. none of above. greater than 1. 1. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 7 pu 5 pu 3.535 pu 5.353 pu 7 pu 5 pu 3.535 pu 5.353 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The arc voltage produced in an AC circuit breaker is always in phase opposition with the arc current. leading the arc current by 90°. in phase with the arc current. lagging the arc current by 90°. in phase opposition with the arc current. leading the arc current by 90°. in phase with the arc current. lagging the arc current by 90°. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage? 30.6 Kv 36. 36 kV 18.18 kV 100 kV 30.6 Kv 36. 36 kV 18.18 kV 100 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4*4 Y bus matrix the number of non zero elements are 12. Find the sparsity of the system? 1 0.5 0.25 0.75 1 0.5 0.25 0.75 ANSWER DOWNLOAD EXAMIANS APP
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