BJT Amplifiers – Exercise – 1

31. An emitter-follower is also known as a

(a) common-emitter amplifier.
(b) common-base amplifier.
(c) common-collector amplifier.
(d) Darlington pair.

Answer
Answer : (c)
Explanation
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32. For a common-emitter amplifier, the purpose of swamping is

(a) to minimize gain.
(b) to reduce the effects of r’e
(c) to maximize gain.
(d) no purpose.

Answer
Answer : (b)
Explanation
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33. The advantage that a Sziklai pair has over a Darlington pair is

(a) higher current gain.
(b) less input voltage is needed to turn it on.
(c) higher input impedance.
(d) higher voltage gain.

Answer
Answer : (b)
Explanation
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34. When the bypass capacitor is removed from a common-emitter amplifier, the voltage gain

(a) increases.
(b) decreases.
(c)
(d)

Answer
Answer : (b)
Explanation
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35. The total gain of a multistage amplifier is the ________.

(a) sum of individual voltage gains
(b) sum
(c)
(d)

Answer
Answer : (b)
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