Home / Single Stage Transistor Amplifiers – 1 – 1

Single Stage Transistor Amplifiers – 1 – 1

1. CE amplifier is characterised by :

(a) low voltage gain
(b) moderate power gain
(c) signal phase reversal
(d) very high output impedance

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

2. A CC amplifier has the highest :

(a) voltage gain
(b) current gain
(c) power gain
(d) output impedance

Answer
Answer : (b)

Explanation
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3. In a class-A amplifier, conduction extends over 360° because Q-point is :

(a) located on load line
(b) located near saturation point
(c) centred on load line
(d) located at or near cut-off point

Answer
Answer : (c)

Explanation
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4. The output of a class-B amplifier :

(a) is distortion-free
(b) consists of positive half-cycle only
(c) is like the output of a full-wave rectifier
(d) comprises short-duration current pulses

Answer
Answer : (b)

Explanation
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5. The maximum overall efficiency of a transformer coupled class-A amplifier is ________ percent.

(a) 78.5
(b) 25
(c) 50
(d) 85

Answer
Answer : (c)

Explanation
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