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 90. 80. 70. 60. 90. 80. 70. 60. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A single phase full bridge inverter can operated in load commutation mode in case load consist of RLC underdamped. RL. RLC critically damped. RLC overdamped. RLC underdamped. RL. RLC critically damped. RLC overdamped. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A Triac has three terminals viz ___________ Two main terminal and a gate terminal None of these Cathode, anode, gate Drain, source, gate Two main terminal and a gate terminal None of these Cathode, anode, gate Drain, source, gate ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is simply ___________. A three junction device A single junction device A triac without gate terminal None of these A three junction device A single junction device A triac without gate terminal None of these 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. 145 μs. 130 μs. 140 μs. 135 μs. 145 μs. 130 μs. 140 μs. ANSWER DOWNLOAD EXAMIANS APP
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