Power Electronics A single phase full bridge inverter can operate in load commutation mode in case load consists of RL. RLC overdamped. RLC critically damped. RLC underdamped. RL. RLC overdamped. RLC critically damped. RLC underdamped. 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 4, 6. 7, 5. 6, 4. 5, 7. 4, 6. 7, 5. 6, 4. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The device that does not have the gate terminal is ___________. SCR Triac Diac FET SCR Triac Diac FET ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Leakage current flows through the thyristor in both forward and reverse blocking mode. forward conduction mode. reverse blocking mode. forward blocking mode. both forward and reverse blocking mode. forward conduction mode. reverse blocking mode. forward blocking mode. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For series connected SCR’s dynamic equalising circuit consists of R and C in series but with diode across R. series R and diode with C across R. R and C in series but with diode across C. series R and diode with C across R. R and C in series but with diode across R. series R and diode with C across R. R and C in series but with diode across C. series R and diode with C across R. 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
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