Power Electronics A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is 0.45. 0.67. 0.32. 0.27. 0.45. 0.67. 0.32. 0.27. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? None of these. Recovery is only 5 µs. Doping is carried out. Recovery is only 50 µs. None of these. Recovery is only 5 µs. Doping is carried out. Recovery is only 50 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is 130 μs. 140 μs. 145 μs. 135 μs. 130 μs. 140 μs. 145 μs. 135 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Spread time is defined as the interval during which anode voltage drops from 10 % of its initial value to zero. both (A) and (B). anode current rises from 90 % to its final value. anode current rises from 10 % to 90 % of its final value. anode voltage drops from 10 % of its initial value to zero. both (A) and (B). anode current rises from 90 % to its final value. anode current rises from 10 % to 90 % of its final value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The function of snubber circuit connected across the SCR is to increase dV / dt. decrease di / dt. suppress dV / dt. decrease dV / dt. increase dV / dt. decrease di / dt. suppress dV / dt. decrease dV / dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT has ___________. One pn junction Two pn junctions Three pn junctions None of these One pn junction Two pn junctions Three pn junctions None of these ANSWER DOWNLOAD EXAMIANS APP
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