Power Electronics A UJT has ___________. One pn junction None of these Two pn junctions Three pn junctions One pn junction None of these Two pn junctions Three pn junctions ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thermal voltage VT can be given by qT/K. Kq/T. KT/q. (K2/q)(T + 1/T - 1). qT/K. Kq/T. KT/q. (K2/q)(T + 1/T - 1). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is of short duration. both (A) and (B). of long period. neither (A) nor (B). of short duration. both (A) and (B). of long period. neither (A) nor (B). 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 90. 70. 80. 60. 90. 70. 80. 60. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Figure shows two thyristors rated 400 A sharing a load current. Current through T2 is 180A. Current through T1 will be 110 A. 120 A. 100 A. 150 A. 110 A. 120 A. 100 A. 150 A. 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
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