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प्रश्न
Draw a diagram showing an amplitude modulated wave by superposing a modulating signal over a sinusoidal carrier wave.
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उत्तर
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संबंधित प्रश्न
Frequencies in the UHF range normally propagate by means of:
(a) Ground waves.
(b) Sky waves.
(c) Surface waves.
(d) Space waves.
Answer the following question :
Define 'bandwidth' and describe briefly its importance in communicating signals ?
Distinguish between ‘Analog and Digital signals’.
Write any two factors which justify the need for modulating a signal ?
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.
A TV tower has a height of 100 meter. If the coverage range is to be made three times then the height of the tower should be increased by.
The area of the region covered by the TV broadcast by a TV tower of 100 m height is (Radius of the earth = 6.4 × 106 m):
What is meant by deviation in frequency of FM wave?
Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
