Power Electronics A single phase full bridge inverter can operate in load commutation mode in case load consists of RLC overdamped. RLC critically damped. RL. RLC underdamped. RLC overdamped. RLC critically damped. RL. RLC underdamped. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Maximum di / dt in a SCR is inversely proportional to Vm of supply voltage. directly proportional to Vm of supply voltage. both A and C. inversely proportional to L in the circuit. inversely proportional to Vm of supply voltage. directly proportional to Vm of supply voltage. both A and C. inversely proportional to L in the circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR? 3.3 µs 3.2 µs 3 µs. 3.1 µs 3.3 µs 3.2 µs 3 µs. 3.1 µs 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 6, 4. 7, 5. 4, 6. 5, 7. 6, 4. 7, 5. 4, 6. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Breakdown of junction. Local hot spot. Insulation failure. None of these. Breakdown of junction. Local hot spot. Insulation failure. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power semiconductor may undergo damage due to Low dv/dt. High di/dt. Low di/dt. High dv/dt. Low dv/dt. High di/dt. Low di/dt. High dv/dt. ANSWER DOWNLOAD EXAMIANS APP
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