Power Electronics An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be 2121.32 A. 1500 A. 6000 A. 4242.64 A. 2121.32 A. 1500 A. 6000 A. 4242.64 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is equivalent to two SCRs ___________. In parallel In inverse-parallel None of these In series In parallel In inverse-parallel None of these In series ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT is sometimes called ___________ diode. Single-base Low resistance Double-base High resistance Single-base Low resistance Double-base High resistance ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is 0.67. 0.27. 0.32. 0.45. 0.67. 0.27. 0.32. 0.45. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A GTO can be turned on by applying Positive gate signal. None of these. Positive source signal. Positive drain signal. Positive gate signal. None of these. Positive source signal. Positive drain signal. ANSWER DOWNLOAD EXAMIANS APP
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