Communication Systems
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.

A is correct but R is wrong
A is wrong but R is correct
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A

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Communication Systems
Circular polarization

Involves critical alignment of transmitting and receiving antenna
Is useful in reducing depolarization effect on received wave
Is useful in discrimination between reception of adjacent beams
None of these

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