Power Electronics The maximum di/dt in a SCR is Directly proportional to inductance in the circuit. Both A and B. Inversely proportional to supply voltage. Directly proportional to supply voltage. Directly proportional to inductance in the circuit. Both A and B. Inversely proportional to supply voltage. Directly proportional to supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Snubber circuit. Voltage clamping device. Heat sink. CB and fuse. Snubber circuit. Voltage clamping device. Heat sink. CB and fuse. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. Then calculate the value of n 70. 90. 80. 60. 70. 90. 80. 60. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power semiconductor may undergo damage due to High dv/dt. High di/dt. Low dv/dt. Low di/dt. High dv/dt. High di/dt. Low dv/dt. Low di/dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A 200 A thyristor is to be operated in parallel with a 300 A thyristor. The ON state voltage drops are 1.5 V and 1.2 Volts. What is the value of resistance R to be connected in series with each thyristor, so that current through the combination is 500 A and each of them is fully loaded ? 0.3 ohm 0.03 ohm 0.3 ohm 3.0 ohm 0.3 ohm 0.03 ohm 0.3 ohm 3.0 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A GTO can be turned on by applying Positive gate signal. Positive source signal. None of these. Positive drain signal. Positive gate signal. Positive source signal. None of these. Positive drain signal. ANSWER DOWNLOAD EXAMIANS APP
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