Q.1.
An AF amplifier is shielded to ___________
Q.2.
If a transistor is operated in such a way that output current flows for 60° of the input signal, then it is ___________ operation
Q.3.
The push-pull circuit must use ___________ operation
Q.4.
In class A operation, the operating point is generally located ___________ of the d.c. load line.
Q.5.
The output transformer used in a power amplifier is a ___________ transformer
Q.6.
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
Q.7.
The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?
Q.8.
The most costly coupling is ___________ coupling
Q.9.
When no signal is applied, the approximate collector efficiency of class A power amplifier is
Q.10.
Transformer coupling can be used in ___________ amplifiers
Q.11.
A 2-transistor class B power amplifier is commonly called ___________ amplifier
Q.12.
A class A power amplifier is sometimes called ___________ amplifier
Q.13.
If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least ___________