Question

The range for the transistor parameter also referred as common-emitter current gain has a value of__________ for common devices.

(a) 50-200

(b) 400-600

(c) 750-1000

(d) > 1000

This question was posed to me during a job interview.

Asked question is from BJTs Device Strucutres and Physical Operations in section Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits

Answer 1

Right option is (a) 50-200

The explanation: Most commonly used transistors have a voltage gain of in the range of 50-200. Only some specially designed transistors have a transistor parameter in the range of 1000.