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 0.25. 0.2. 0.75. 0.7. 0.25. 0.2. 0.75. 0.7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The function of snubber circuit connected across the SCR is to increase dV / dt. decrease di / dt. decrease dV / dt. suppress dV / dt. increase dV / dt. decrease di / dt. decrease dV / dt. suppress dV / dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is both (A) and (B). of long period. neither (A) nor (B). of short duration. both (A) and (B). of long period. neither (A) nor (B). of short duration. 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 7, 5. 4, 6. 6, 4. 5, 7. 7, 5. 4, 6. 6, 4. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thyristor is nothing but a Controlled transistor. Controlled switch. Amplifier with large current gain. Amplifier with higher gain. Controlled transistor. Controlled switch. Amplifier with large current gain. Amplifier with higher gain. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thyristor can be protected from over voltages by using fuse. heat sink. voltage clamping device. snubber circuit. fuse. heat sink. voltage clamping device. snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
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