1.Which of the push-pull amplifiers is presently the most
popular form of the class B power amplifier?
A) Quasi-complementary
B)Transformer-coupled
C)Complementary-symmetry
D)None of the above
Ans:A) Quasi-complementary
2. In a class C amplifier
A) Efficiency and distortion both
are maximum
B) Efficiency and distortion both are minimum.
C) Efficiency
maximum but distortion minimum.
D) Efficiency minimum but distortion maximum
3. High power efficiency of the push-pull amplifier is due
to the fact
A) Each transistor conducts on different cycles of the input.
B) Transistors are placed in CE configuration.
C) There is almost no quiescent
collector current
D) Low forward biasing voltage is required.
4. Which amplifier is commonly used as a frequency multiplier?
A) class A
B) class B
C) class C
D) all of the above
Ans:
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