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Communication Systems

Q1: In an AM transmitter after the modulation stage, class C amplifier

A can be used

B cannot be used

C may be used, but it has no use

D can't be determine to use

ANS:B - cannot be used

In AM for High-level modulation-AM, we use class C or D, for higher efficiency.

For low-level Am-we use class A or B.



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