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प्रश्न
Distinguish between ‘Analog and Digital signals’.
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उत्तर
It is continuous signal, which varies continuously with variable may be time or distance etc.
E.g. Sound of human
Digital Signal:-
It is a type of signal which has only two values high or low. In digital high mean 1 and low means zero.
E.g. Temperature of day
Maximum 30°C ⇒ 1
Minimum 15°C ⇒ 0
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संबंधित प्रश्न
Which of the following frequencies will be suitable for beyond-the-horizon communication using sky waves?
(a) 10 kHz
(b) 10 MHz
(c) 1 GHz
(d) 1000 GHz
Answer the following question :
Define 'bandwidth' and describe briefly its importance in communicating signals ?
Write any two factors which justify the need for modulating a signal ?
Draw a diagram showing an amplitude modulated wave by superposing a modulating signal over a sinusoidal carrier wave.
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.
Broadcasting antennas are generally
The audio frequency range is
Broadcast band in which FM lies is ______.
Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
