Related Questions

A class A power amplifier is sometimes called ___________ amplifier
A Symmetrical
B Single-ended
C Reciprocating
D Differential
The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?
A 39
B 78
C 117
D 156
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________
A Transistor
B Biasing circuit
C Collector supply VCC
D None of the above
The maximum efficiency of transformer coupled class A power amplifier is ___________
A 30%
B 50%
C 80%
D 45%
The bandwidth of a single stage amplifier is ___________ that of a multistage amplifier
A More than
B The same as
C Less than
D Data insufficient
A single phase transformer has a maximum efficiency of 90% at full load and unity power factor. Efficiency at half load at the same power factor is -
A 87.8%
B 86.7%
C 88.26%
D 88.9%
If biasing is not done in an amplifier circuit, it results in ___________
A Decrease in the base current
B Unfaithful amplification
C Excessive collector bias
D None of the above
The maximum efficiency of resistance loaded class A power amplifier is
A 5%
B 50%
C 30%
D 25%
When no signal is applied, the approximate collector efficiency of class A power amplifier is
A 10%
B 0%
C 25%
D 50%
Class C power amplifier has the highest collector efficiency
A C
B A
C B
D AB

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