Power Electronics The typical time of rising time lies between 40 - 60 µs. 90 - 100 µs. 10 - 20 µs. 1 - 4 µs. 40 - 60 µs. 90 - 100 µs. 10 - 20 µs. 1 - 4 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Maximum di / dt in a SCR is inversely proportional to Vm of supply voltage. both A and C. inversely proportional to L in the circuit. directly proportional to Vm of supply voltage. inversely proportional to Vm of supply voltage. both A and C. inversely proportional to L in the circuit. directly proportional to Vm of supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The function of snubber circuit connected across the SCR is to increase dV / dt. suppress dV / dt. decrease di / dt. decrease dV / dt. increase dV / dt. suppress dV / dt. decrease di / dt. decrease dV / dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. High Low None of these Extremely low High Low None of these Extremely low 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 < Ig3. Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalising circuit is useful both B and C. to limit dV / dt of SCR. to limit di / dt of SCR. for voltage equalisation. both B and C. to limit dV / dt of SCR. to limit di / dt of SCR. for voltage equalisation. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS