Exercise: Power Amplifiers

Questions for: Power Amplifiers

The principal advantage(s) of MOSFETs over BJTs is (are)
A:
their biasing networks are simpler.
B:
their drive requirements are simpler.
C:
they can be connected in parallel for added drive capability.
D:
all of the above
Answer: D
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Class AB operation is ________ operation.
A:
similar to class A
B:
similar to class B
C:
similar to class C
D:
None of the above
Answer: D
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Which type of power amplifier is biased for operation at less than 180º of the cycle?
A:
Class A
B:
Class B or AB
C:
Class C
D:
Class D
Answer: C
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You find that there is an input signal on the base of Q1 and Q2. However, there is no output signal. You then measure the dc voltages on Q2 and find them to be all 0 V. The possible trouble might be

A:
C3 is shorted.
B:
C1 is open.
C:
RL is shorted.
D:
VCC is 0 V.
Answer: D
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Class ________ amplifiers are normally operated in a push-pull configuration in order to produce an output that is a replica of the input.
A:
A
B:
B
C:
C
D:
AB
Answer: D
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