An $AM$ wave has $1800 \,W$ of total power content. For $100 \%$ modulation, the carrier should have power content equal to: (in $\,W$)

$A$ $25\, m$ long antenna is mounted on an antenna tower. The height of the antenna tower is $75\, m$. The wavelength (in meter) of the signal transmitted by this antenna would be

If the amplitude of an audio signal is half the amplitude of the carrier wave,what is the modulation index?

What is the frequency range of signals that can be transmitted using a $Twisted\, pair\, wire$?

In an amplitude modulator circuit,the carrier wave is given by $C(t) = 4 \sin(20000 \pi t)$ and the modulating signal is given by $m(t) = 2 \sin(2000 \pi t)$. The values of the modulation index and the lower sideband frequency are:

Which of the following frequencies does not belong to the $FM$ broadcast band (in $,MHz$)?