As shown in figure "A" of the illustration, under what conditions will the thyristor conduct? EL-0154

Correct Answer: Option A — when the anode is more positive than the cathode and when the gate is briefly pulsed with a voltage more positive than the cathode

A Silicon Controlled Rectifier (SCR) thyristor requires a forward-biased anode-to-cathode voltage and a positive gate pulse to trigger conduction. Once triggered, it remains in the conducting state until the current falls below the holding current threshold, a characteristic used in power rectification and switching circuits on modern vessels.