Power Electronics A UJT has ___________. One pn junction None of these Three pn junctions Two pn junctions One pn junction None of these Three pn junctions Two pn junctions ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is of short duration. neither (A) nor (B). both (A) and (B). of long period. of short duration. neither (A) nor (B). both (A) and (B). of long period. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor can termed as DC switch. AC switch. Square wave switch. Both a and B. DC switch. AC switch. Square wave switch. Both a and B. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Why resistor is used in Snubber circuit ? All of these. To minimize the loss . To minimize the discharging current. To minimize the charging current. All of these. To minimize the loss . To minimize the discharging current. To minimize the charging current. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The latching current of SCR is 20 mA. Its holding current will be 23 mA. 60 mA. 40 mA. 10 mA. 23 mA. 60 mA. 40 mA. 10 mA. 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. Not turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. Turn on. Not turn on. Turn on if inductance is removed. ANSWER DOWNLOAD EXAMIANS APP
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