Communication Systems
The modulation index of an FM is changed from 0 to 1. How does the transmitted power change?

Remains unchanged
Gets increased by 50 percent
Gets halved
Gets doubled

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Communication Systems
In Pulse Code Modulation system

Suffers from the disadvantage of its incompatibly with TDM
Quantising noise can be overcome by companding
Large bandwidth is required
Quantising noise can be reduced by decreasing the number of standard levels

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

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