Power Electronics CB used for over current protection of thyristor operates when the fault current is of long period. neither (A) nor (B). of short duration. both (A) and (B). of long period. neither (A) nor (B). of short duration. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT has ___________. One pn junction Three pn junctions Two pn junctions None of these One pn junction Three pn junctions Two pn junctions None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Practical way of obtaining static voltage equalization in series connected SCRs is by the use of one resistor across the string. one resistor in series with each SCR. resistors of different values across each SCR. resistors of the same value across each SCR. one resistor across the string. one resistor in series with each SCR. resistors of different values across each SCR. resistors of the same value across each SCR. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Anode current in an SCR consists of either electron or holes. electrons only. holes only. Both electron and holes. either electron or holes. electrons only. holes only. Both electron and holes. 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. 80. 70. 60. 90. 80. 70. 60. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A Triac has three terminals viz ___________ Drain, source, gate Cathode, anode, gate Two main terminal and a gate terminal None of these Drain, source, gate Cathode, anode, gate Two main terminal and a gate terminal None of these ANSWER DOWNLOAD EXAMIANS APP
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