A telephonic communication service is working at carrier frequency of 10 GHz. Only 10% of it is utilized for transmission. How many telephonic channels can be transmitted simultaneously if each channel requires a bandwidth of 5 kHz ?
A carrier wave of peak voltage 14 V is used for transmitting a message signal. The peak
voltage of modulating signal given to achieve a modulation index of 80% will
The number of amplitude modulated broadcast stations that can be accomodated in a 300 kHz band width for the highest modulating frequency 15 kHz will be :