Power Electronics If holding current of a thyristor is 2 mA then latching current should be 0.01 A. 0.002 A. 0.004 A. 0.009 A. 0.01 A. 0.002 A. 0.004 A. 0.009 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Example of a voltage clamping device snubber circuit. fast acting fuse. metal oxide varistor. aluminium block. snubber circuit. fast acting fuse. metal oxide varistor. aluminium block. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When the temperature increases, the inter-base resistance (RBB) of a UJT ___________. Increases None of these Decreases Remains the same Increases None of these Decreases Remains the same ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. Not turn on. Turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. 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 Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. ANSWER DOWNLOAD EXAMIANS APP
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