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. 60. 70. 80. 90. 60. 70. 80. 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? 3.2 µs 3.3 µs 3.1 µs 3 µs. 3.2 µs 3.3 µs 3.1 µs 3 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following is not a power transistor? TRIAC. COOLMOS. IGBTs. SITS. TRIAC. COOLMOS. IGBTs. SITS. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Delay time is defined by the interval when all of these. gate current increases from 90 % to 100 % of its final value. anode current reaches 10 % from forward leakage current. anode voltage drops from 100 % to 90 % of its actual value. all of these. gate current increases from 90 % to 100 % of its final value. anode current reaches 10 % from forward leakage current. anode voltage drops from 100 % to 90 % of its actual value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Example of a voltage clamping device metal oxide varistor. fast acting fuse. aluminium block. snubber circuit. metal oxide varistor. fast acting fuse. aluminium block. snubber circuit. 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 140 μs. 145 μs. 135 μs. 130 μs. 140 μs. 145 μs. 135 μs. 130 μs. ANSWER DOWNLOAD EXAMIANS APP
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