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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 18
46.
To draw dc equivalent circuit for a CE amplifier circuit we should
Reduce all ac sources to zero
Open all capacitors
Reduce all ac sources to zero and open all capacitors
Reduce all ac sources to zero and short all capacitors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The maximum efficiency of class A amplifier is
100%
81.8%
50%
40%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
In a cascade amplifier, the intermediate stages are always in
CC configuration
CB configuration
CE configuration
any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
For an amplifier the power gain in decibels will be equal to voltage gain in decibels only when
R0 = 0
R0 = Ri = 90
R0 = Ri
Ri = 0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
In a differential amplifier, CMRR can be improved by using an increased
emitter resistance
collector resistance
power supply voltages
source resistance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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