Question

Choose the correct statement

(a) A transistor will remain on as long the the base current is applied

(b) A transistor remains on after a high to low pulse is applied at the base

(c) A transistor will remain on as long the the collector current is applied

(d) A transistor remains on after a high to low pulse is applied at the collector

This question was posed to me in unit test.

This intriguing question comes from Power Transistors-2 in chapter Power Electronics Devices of Power Electronics

Answer 1

Right choice is (a) A transistor will remain on as long the the base current is applied

Easy explanation: Unlike the thyristor devices, all the transistor family devices remain in the conducting state as long as the firing pulses are applied. This is a very important property of the transistor devices.