Semi Conductor Devices MCQ - Electrician (Set-1) with Answers

Semi Conductor Devices MCQ - Electrician (Set-1) with Answers

11) In a three stage cascade amplifier, if the gain of first stage is 50, of second stage is 10 and of third stage is 5, then what is the overall gain ?

Answer is:

2500

12) Which one of the following points is true in case of direct coupled amplifiers ?

Answer is:

Needs a ripple free power supply

13) In RC coupled amplifier, the reduction in gain at low frequencies is caused due to ?

Answer is:

capacitive reactance

14) The advantage of impedance coupling (using a choke as collector load) is ?

Answer is:

low d.c. resistance and high impedance

15) Transformer coupling is not preferred in audio frequency amplifiers because ?

Answer is:

all the above stated drawbacks