Power Electronics During reverse recovery time charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. both B and C. charge carrier of junction J3 is swept out. charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. both B and C. charge carrier of junction J3 is swept out. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics To turn on UJT, the forward bias on the emitter diode should be ___________ the peak point voltage. None of these Less than More than Equal to None of these Less than More than Equal to ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is not a characteristic of UJT? Bilateral conduction Peak-point voltage Intrinsic stand off ratio Negative resistance Bilateral conduction Peak-point voltage Intrinsic stand off ratio Negative resistance ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Local hot spot. Insulation failure. None of these. Breakdown of junction. Local hot spot. Insulation failure. None of these. Breakdown of junction. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics How can we protect SCR from thermal conditions ? Using equalizing circuit. Using CB and fuse. Using heat sink. Use of snubber circuit. Using equalizing circuit. Using CB and fuse. Using heat sink. Use of snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is 0.2. 0.25. 0.75. 0.7. 0.2. 0.25. 0.75. 0.7. ANSWER DOWNLOAD EXAMIANS APP
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