A class A power amplifier uses _________________?
A. Two transistors
B. Three transistors
C. One transistor
D. None of the above
Transistor Audio Power Amplifiers
The output stage of a multistage amplifier is also called _________________-?
The output stage of a multistage amplifier is also called _________________-?
A. Mixer stage
B. Power stage
C. Detector stage
D. F stage
Class_____________ power amplifier has the highest collector efficiency ?
Class_____________ power amplifier has the highest collector efficiency ?
A. C
B. A
C. B
D. AB
The maximum efficiency of resistance loaded class A power amplifier is _________________?
The maximum efficiency of resistance loaded class A power amplifier is _________________?
A. 5%
B. 50%
C. 30%
D. 25%
________________ coupling is generally employed in power amplifiers?
________________ coupling is generally employed in power amplifiers?
A. Transformer
B. RC
C. direct
D. Impedance
Power amplifiers handle ______________ signals compare to voltage amplifiers?
Power amplifiers handle ______________ signals compare to voltage amplifiers?
A. Small
B. Very small
C. Large
D. None of the above
The maximum efficiency of transformer coupled class A power amplifier is _______________?
The maximum efficiency of transformer coupled class A power amplifier is _______________?
A. 30%
B. 50%
C. 80%
D. 45%
In class A operation, the operating point is generally located_____________of the d.c. load line?
In class A operation, the operating point is generally located_____________of the d.c. load line?
A. At cut off point
B. At the middle
C. At saturation point
D. None of the above
The maximum collector efficiency of class B operation is ________________?
The maximum collector efficiency of class B operation is ________________?
A. 50%
B. 90%
C. 5%
D. 5%
If a transistor is operated in such a way that output current flows for 60o of the input signal, then it is ______________ operation?
If a transistor is operated in such a way that output current flows for 60o of the input signal, then it is ______________ operation?
A. Class A
B. Class B
C. Class C
D. None of the above