BJT Amplifiers – Exercise – 1

36. What is re equal to in terms of h parameters?

(a) hre / hoe
(b) (hre + 1) / hoe
(c) hie – (hre / hoe)(1 + hfe)
(d) hfe[E]. none of the above

Answer
Answer : (a)
Explanation
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37. A common-collector amplifier has ________ input resistance, ________ current gain, and ________ voltage gain.

(a) high, high, low
(b) high, low, low
(c)
(d)

Answer
Answer : (a)
Explanation
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38. A Darlington pair provides beta ________ for ________ input resistance.

(a) multiplication, decreased
(b) multiplication, increased
(c)
(d)

Answer
Answer : (b)
Explanation
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39. You have a need to apply an amplifier with a very high power gain. Which of the following would you choose?

(a) common-collector
(b) common-base
(c) common-emitter
(d) emitter-follower

Answer
Answer : (c)
Explanation
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40. Nota

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