Power Electronics Maximum di / dt in a SCR is inversely proportional to Vm of supply voltage. both A and C. directly proportional to Vm of supply voltage. inversely proportional to L in the circuit. inversely proportional to Vm of supply voltage. both A and C. directly proportional to Vm of supply voltage. inversely proportional to L in the circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalising circuit is useful both B and C. for voltage equalisation. to limit di / dt of SCR. to limit dV / dt of SCR. both B and C. for voltage equalisation. to limit di / dt of SCR. to limit dV / dt of SCR. 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 < Ig3. Vc1 > Vc2 > Vc3 when Ig1= Ig2 Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. Vc1 = Vc2 = Vc3 any value of Ig. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. Vc1 > Vc2 > Vc3 when Ig1= Ig2 ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac can pass a portion of ___________ half-cycle through the load. Only positive Only negative Both positive and negative None of these Only positive Only negative Both positive and negative 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 resistors of the same value across each SCR. one resistor in series with each SCR. resistors of different values across each SCR. one resistor across the string. resistors of the same value across each SCR. one resistor in series with each SCR. resistors of different values across each SCR. one resistor across the string. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thermal voltage VT can be given by KT/q. Kq/T. qT/K. (K2/q)(T + 1/T - 1). KT/q. Kq/T. qT/K. (K2/q)(T + 1/T - 1). ANSWER DOWNLOAD EXAMIANS APP
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