Power Electronics During reverse recovery time charge carrier of junction J3 is swept out. charge carrier of junction J2 recombined. both B and C. charge carrier of junction J1 is swept out. charge carrier of junction J3 is swept out. charge carrier of junction J2 recombined. both B and C. charge carrier of junction J1 is swept out. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The triac is ___________. None of these Not a thyristor Like a bidirectional SCR A four-terminal device None of these Not a thyristor Like a bidirectional SCR A four-terminal device ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Anode current in an SCR consists of electrons only. Both electron and holes. holes only. either electron or holes. electrons only. Both electron and holes. holes only. either electron or holes. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? Doping is carried out. None of these. Recovery is only 50 µs. Recovery is only 5 µs. Doping is carried out. None of these. Recovery is only 50 µs. Recovery is only 5 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics SCR will be turned off when anode current is less than holding current. < latching current but greater than holding current and gate signal is present. both (A) and (B). < latching current but greater than holding current and gate signal is 0. less than holding current. < latching current but greater than holding current and gate signal is present. both (A) and (B). < latching current but greater than holding current and gate signal is 0. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is both (A) and (B). neither (A) nor (B). of long period. of short duration. both (A) and (B). neither (A) nor (B). of long period. of short duration. ANSWER DOWNLOAD EXAMIANS APP
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