1.
The disadvantage of impedance matching is that it ___________

2.
The maximum efficiency of resistance loaded class A power amplifier is

3.
The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor?

4.
___________ coupling is generally employed in power amplifiers

5.
The output stage of a multistage amplifier usually employs ___________

6.
A class A power amplifier is sometimes called ___________ amplifier

7.
A 2-transistor class B power amplifier is commonly called ___________ amplifier

8.
Transformer coupling can be used in ___________ amplifiers

9.
The output transformer used in a power amplifier is a ___________ transformer

10.
In class A operation, the operating point is generally located ___________ of the d.c. load line.

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