Power Electronics A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be 1500 A. 6000 A. 2121.32 A. 4242.64 A. 1500 A. 6000 A. 2121.32 A. 4242.64 A. 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 130 μs. 135 μs. 145 μs. 140 μs. 130 μs. 135 μs. 145 μs. 140 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During reverse recovery time both B and C. charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. charge carrier of junction J3 is swept out. both B and C. charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. charge carrier of junction J3 is swept out. 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. 60. 80. 70. 90. 60. 80. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The device that does not have the gate terminal is ___________. FET Diac SCR Triac FET Diac SCR Triac ANSWER DOWNLOAD EXAMIANS APP
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