Power Electronics Dynamic equalizing circuit is used for equal division of current through each thyristor in series. equal division of voltage across each thyristor. equal division of current through each thyristor in parallel. equal division of voltage across each thyristor in parallel. equal division of current through each thyristor in series. equal division of voltage across each thyristor. equal division of current through each thyristor in parallel. equal division of voltage across each thyristor in parallel. 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 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. Not turn on. Turn on. 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. 60. 90. 80. 70. 60. 90. 80. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Local hot spot. None of these. Breakdown of junction. Insulation failure. Local hot spot. None of these. Breakdown of junction. Insulation failure. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor can termed as AC switch. DC switch. Both a and B. Square wave switch. AC switch. DC switch. Both a and B. Square wave switch. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is a ___________ switch None of these Bidirectional Mechanical Unidirectional None of these Bidirectional Mechanical Unidirectional ANSWER DOWNLOAD EXAMIANS APP
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