Power Electronics When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. Extremely low None of these High Low Extremely low None of these High Low ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is used in SCR to protect from high dV / dt? Fuse. Circuit breaker. Snubber circuit. Equalizing circuit. Fuse. Circuit breaker. Snubber circuit. Equalizing circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 5, 7. 7, 5. 4, 6. 6, 4. 5, 7. 7, 5. 4, 6. 6, 4. 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 135 μs. 140 μs. 130 μs. 145 μs. 135 μs. 140 μs. 130 μs. 145 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is turned on by ___________. None of these Gate voltage Gate current A breakover voltage None of these Gate voltage Gate current A breakover voltage ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac has ___________ terminals. Three None of these Four Two Three None of these Four Two ANSWER DOWNLOAD EXAMIANS APP
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