Question

What will the power gain of a transistor if it’s α value is 0.80 and the voltage gain is 95?

(a) 70

(b) 80

(c) 76

(d) 75

I had been asked this question during a job interview.

I want to ask this question from Semiconductor Electronics topic in portion Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer 1

The correct answer is (c) 76

The best I can explain: Power gain is defined as the ratio of output power to input power. It can also be determined as the product of current gain and voltage gain.

Given: α = 0.80, voltage gain (AV) = 95

The required equation ➔ AP = α × AV

AP=0.80×95

AP=76