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Electronic Devices - Power Amplifiers

Exercise : Power Amplifiers - General Questions
46.
In practice, the efficiency of a capacitively coupled class A amplifier is about ________%.
25
40
70
10
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
This is an example of the output swing for a class ________ amplifier.

A
B
AB
C
D
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
For BJT power transistors, the collector terminal is always connected to the transistor's case
for easy circuit connection.
to prevent shorts.
because the collector terminal is the critical terminal for heat dissipation.
because the collector terminal is located nearest the case.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
A class A amplifier has a voltage gain of 30 and a current gain of 25. What is the power gain?
30
25
1.2
750
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Which of the following transistors has been quite popular as the driver device for class D amplification?
BJT
FET
UJT
MOSFET
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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