pulse Click on Answer tab for Answers.

Amplifiers – 2 – 1

51. It is most necessary to control signal-to-noise ratio at ……..

(a) initial stage
(b) driver stage
(c) output stage
(d) detector stage

ANSWER

EXPLANATION

52. In order to obtain good gain stability in a negative voltage feedback amplifier (Av = voltage gain without feedback ; mv = feedback fraction), ………….

(a) Av mv = 1
(b) Av mv >> 1
(c) Av mv < 1
(d) none of the above

ANSWER

EXPLANATION

53. Emitter follower is also known as ………

(a) grounded emitter circuit
(b) grounded base circuit
(c) grounded collector circuit
(d) none of the above

ANSWER

EXPLANATION

54. The bandwidth of an audio amplifier extends from 20Hz to :

(a) 2000 Hz
(b) 10000 Hz
(c) 20000 Hz
(d) 100,000 Hz

ANSWER

EXPLANATION

55. Which of the following contributes to harmonics distortion in amplifiers :

(a) Positive feedback
(b) Presence of noise
(c) Defective active device
(d) Non-linearity in active device

ANSWER

EXPLANATION

1 2 3

Be a Part of The New & Next

MCQs fb  MCQs G+

Share the Knowledge

Leave a Reply

Your email address will not be published. Required fields are marked *

Shares
Copy Protected by Chetan's WP-Copyprotect.