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Electronic Devices - Power Amplifiers

Exercise : Power Amplifiers - General Questions
56.
The maximum efficiency of a class B amplifier is ________ percent.
50
25
70
79
Answer: Option
Explanation:
No answer description is available. Let's discuss.
57.
Calculate the effective resistance seen looking into the primary of a 20:1 transformer connected to an 8- load.
3.2 k
3.0 k
2.8 k
1.8 k
Answer: Option
Explanation:
No answer description is available. Let's discuss.
58.
The maximum efficiency of a transformer-coupled class A amplifier is ________.
25%
50%
78.5%
63.6%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
59.
A class ________ amplifier is biased slightly above cutoff and operates in the linear region for slightly more than 180º of the input cycle.
A
B
C
AB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
60.
The class ________ amplifier is biased below cutoff.
A
AB
B
C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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