The bandwidth of a coaxial cable is approximately ........ .

If $E_c$ and $E_m$ are peak values of carrier and modulating signals,respectively,then for $100 \%$ modulation,

Which of the following four alternatives is not correct? We need modulation:

In a frequency modulated wave:

$A$ signal of $100 \,THz$ frequency can be transmitted with maximum efficiency by

$A$ sinusoidal carrier voltage of frequency $1.5 \, MHz$ and amplitude $50 \, V$ is amplitude modulated by a sinusoidal voltage of frequency $10 \, kHz$ producing $50 \%$ modulation. The lower and upper side-band frequencies in $kHz$ are: