Communication Systems
In Modulation, “carrier” is

Voltage for which frequency, phase or amplitude is varied
Resultant wave
Voltage with constant frequency, phase or amplitude
Speech voltage to be transmitted

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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.

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

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