A) plane - modulated class C amplifier
B) grid - modulated class C amplifier
C) screen - modulated class C amplifier
D) grid - modulated class A amplifier
Correct Answer: B
Solution :
Because of their inherent distortion class C amplifiers are never used as audio amplifier, but they are primarily employed in the final stage of TV transmitter. Also, owing to low efficiency of class A operations these amplifiers are not employed, where large RF (radio frequency) power is involved, e.g. to excite transmitting antenna, m such cases class C amplifiers are used, since a class C amplifier has a very high efficiency, it can deliver more load power, in output state of a TV transmitter grid-modulated class C amplifier is used.
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