Exercise: Power Amplifiers

Questions for: Power Amplifiers

The greater the power handled by the power transistor, ________ the case temperature.
A:
the higher
B:
the lower
C:
there is no change in
D:
None of the above
Answer: A
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The complementary Darlington-connected transistor for a class B amplifier provides ________ output current and ________ output resistance.
A:
higher, higher
B:
higher, lower
C:
lower, lower
D:
lower, higher
Answer: B
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The ________ has the hottest temperature in a power transistor.
A:
heat sink
B:
case
C:
junction
D:
None of the above
Answer: C
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The slope of the ac load line in the class A transformer-coupled transistor is ________.
A:
–1/RL (load resistor)
B:
1/(a2RL)
C:
–1/(a2RL)
D:
1/RL
Answer: C
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The main feature(s) of a large-signal amplifier is (are) the ________.
A:
circuit's power efficiency
B:
maximum amount of power that the circuit is capable of handling
C:
impedance matching to the output
D:
All of the above
Answer: D
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