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.Management Sciences
Category: Transistor Audio Power Amplifiers
Power amplifiers handle ______________ signals compare to voltage amplifiers?
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A. Small
B. Very small
C. Large
D. None of the above
A class A power amplifier is sometimes called______________amplifier?
A. Symmetrical
B. Single-ended
C. Reciprocating
D. Differential
The push-pull circuit must use ______________ operation?
A. Class A
B. Class C
C. Class B
D. Class AB
The maximum efficiency of transformer coupled class A power amplifier is _______________?
A. 30%
B. 50%
C. 80%
D. 45%
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
A. 10 W
B. 4 W
C. 8 W
D. None of the above
Power amplifiers generally use transformer coupling because transformer permits______________?
A. Cooling of the circuit
B. Impedance matching
C. Distortionless output
D. Good frequency response
The output stage of a multistage amplifier usually employs _________________?
A. Push-pull amplifier
B. Preamplifier
C. Class A power amplifier
D. None of the above
The output stage of a multistage amplifier usually employs______________?
A. Push-pull amplifier
B. Preamplifier
C. Class A power amplifier
D. None of the above
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