Advertisements
Advertisements
Question
Write any two factors which justify the need for modulating a signal ?
Advertisements
Solution
(i) To send the signal over large distances for communication.
(ii) To avoid the fluctuation and reduce noise of signal.
APPEARS IN
RELATED QUESTIONS
Frequencies in the UHF range normally propagate by means of:
(a) Ground waves.
(b) Sky waves.
(c) Surface waves.
(d) Space waves.
Whatis the difference between analogue signal and. digital signal?
Answer the following question :
Define 'bandwidth' and describe briefly its importance in communicating signals ?
Block diagram of a receiver is shown in the figure:
(a) Identify ‘X’ and ‘Y’.
(b) Write their functions.
Distinguish between ‘Analog and Digital signals’.
Write briefly any two factors which demonstrate the need for modulating a signal. Draw a suitable diagram to show amplitude modulation using a sinusoidal signal as the modulating signal.
What do you mean by bandwidth of a signal? Give its importance.
Differentiate between Analog and Digital communication.
Long distance short-wave radio broadcasting uses
Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
