Electrical World

Hello Engineers. Q.1 If the current of an SCR increases, the forward breakdown voltage will A. Decrease B. Not be effected C. Increase D. Become zero Ans: A Q.2 If the gate current of an scr is increased, the forward breakdown voltage will A. Increase B. Decrease C. Not be affected D. Become infinite Ans: C Q.3 After firing an scr, the gate pulse is remove. The current in the scr will A. Remain the same B. Immediately fall to zero C. Rise up D. Rise a little and then fall to zero Ans: A Q.4 An scr conducts an appreciable current when the gate is negative and the a node is positive with respect to the cathode. A. Gate is negative and the anode is positive with respect to the cathode B. Anode and the gate are both negative with respect to the cathode C. Anode and the gate are both positive with respect to the cathode D. Anode is negative and the gate is positive with respect to the cathode. Ans: C Q.5 Pulse gate triggering is achieved by means of ...