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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 8
31.
Class A and Class B power amplifiers predominate at
audio frequencies
radio frequencies
all frequencies
audio and radio frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
In a class C operation VCC = 30 V and VCE(sat) = 2 V. The efficiency is
93.75%
88%
6.66%
3.33%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In a CE amplifier, the collector resistance is 6 kΩ and load resistance is 3 kΩ. The ac load resistance is
9 kΩ
6 kΩ
3 kΩ
2 kΩ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
A voltage tripler circuit uses
2 diodes and 2 capacitors
3 diodes and 3 capacitors
2 diodes and 3 capacitors
3 diodes and 2 capacitors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
An op-amp uses
RC coupling
direct coupling
transformer coupling
either (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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