Power Electronics For series connected SCR’s dynamic equalising circuit consists of R and C in series but with diode across C. R and C in series but with diode across R. series R and diode with C across R. series R and diode with C across R. R and C in series but with diode across C. R and C in series but with diode across R. series R and diode with C across R. series R and diode with C across R. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is equivalent to two SCRs ___________. In series In inverse-parallel In parallel None of these In series In inverse-parallel In parallel None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics To meet high current demand we use SCRs in anti parallel connection. both B and C. parallel connection. series connection. anti parallel connection. both B and C. parallel connection. series connection. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Between the peak point and the valley point of UJT emitter characteristics we have ___________ region Cut-off Saturation None of these Negative resistance Cut-off Saturation None of these Negative resistance ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following devices has highest di/dt and dv/dt capability? SCR. GTO. SIT. SITH. SCR. GTO. SIT. SITH. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 6, 4. 7, 5. 5, 7. 4, 6. 6, 4. 7, 5. 5, 7. 4, 6. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS