Exercise: Bjt Amplifiers

Questions for: Bjt Amplifiers

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: B
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What is the range of the input impedance of a common-base configuration?
A:
A few ohms to a maximum of 50
B:
1 k to 5 k
C:
100 k to 500 k
D:
1 M to 2 M
Answer: A
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A common-emitter amplifier has ________ voltage gain, ________ current gain, ________ power gain, and ________ input impedance.
A:
high, low, high, low
B:
high, high, high, low
C:
high, high, high, high
D:
low, low, low, high
Answer: B
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What is the voltage gain of a feedback pair connection?
A:
1
B:
–1
C:
100
D:
–100
Answer: A
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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: C
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