An SCR can exercise control over ___________ of a.c. supply

A. Germanium B. Silicon C. Carbon D. None of the above

A. Gate B. Cathode C. Anode D. None of the above

A. Voltage B. Current C. Voltage as well as current D. None of the above

A. Positive half-cycles only B. Negative half-cycles only C. Both positive and negative half-cycles D. Positive or negative half-cycles