Question

The power electronics devices have a very high efficiency because

(a) cooling is very efficient

(b) the devices traverse active region at high speed & stays at the two states, on and off

(c) the devices never operate in active region

(d) the devices always operate in the active region

I had been asked this question by my school principal while I was bunking the class.

This interesting question is from Power Transistors-2 in division Power Electronics Devices of Power Electronics

Answer 1

Right answer is (b) the devices traverse active region at high speed & stays at the two states, on and off

The explanation is: They are efficient due to their higher transition speeds.