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Electronic Devices - Power Amplifiers

Exercise : Power Amplifiers - General Questions
36.
A class B amplifier operates in the linear region for
slightly more than 180° of the input cycle.
360° of the input cycle.
slightly less than 180° of the input cycle.
much less than 180° of the input cycle.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Which of the following instruments displays the harmonics of a distorted signal?
Digital multimeter
Spectrum analyzer
Oscilloscope
Wave analyzer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Calculate the efficiency of a transformer-coupled class A amplifier for a supply of 15 V and an output of V(p) = 10 V.
25%
33.3%
50%
78.5%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
________ amplifiers primarily provide sufficient power to an output load to drive a speaker from a few watts to tens of watts.
Small-signal
Power
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
You have an application for a power amplifier to operate on FM radio frequencies. The most likely choice would be a ________ amplifier.
class A
class B
class C
class AB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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