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Amplifiers – 1 – 7

31. When current feedback (negative) is applied to an amplifier, its output impedance ……

(a) is increased
(b) is decreased
(c) remains the same
(d) none of the above

ANSWER

EXPLANATION

32. Emitter follower is a …………… circuit.

(a) voltage feedback
(b) current feedback
(c) both voltage and current feedback
(d) none of the above

ANSWER

EXPLANATION

33. If voltage feedback (negative) is applied to an amplifier, its output impedance ……..

(a) remains the same
(b) is increased
(c) is decreased
(d) none of the above

ANSWER

EXPLANATION

34. When negative voltage feedback is applied to an amplifier, its bandwidth ……..

(a) is increased
(b) is decreased
(c) remains the same
(d) insufficient data

ANSWER

EXPLANATION

35. An emitter follower has ….. input impedance.

(a) zero
(b) low
(c) high
(d) none of the above

ANSWER

EXPLANATION

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