On Increasing the modulation index:
On Increasing the modulation index:
1). Transmitted power is constant in AM but increases in FM
2). Transmitted power is constant in FM but increases in AM
3). Transmitted power decreases in both AM and FM
4). Transmitted power increases in both AM and FM
1 answers
A.M.:
Transmitted power in AM is given by
$({P_t} = {P_c}\left( {1 + \frac{{{\mu ^2}}}{2}} \right))$
If the modulation index μ increases, transmitted power increases.
F.M.:
Transmitted power in FM is given by
$({P_c} = \frac{{A_c^2}}{2})$
The transmitted power is independent of the modulation index and depends only on the carrier amplitude.
Thus, transmitted power in case of FM is constant with increase in modulation index.Other Questions
3. Residual resistivity of a conductor is measured at
4. In a single phase AC series motor the purpose of providing compensating winding is to:
6. Which one of the following is NOT a synchronous counter?
7. The dc current through each diode in a bridge rectifier equals.
8. In a three phase converter, the number of notches per cycle is