Why is an AM signal likely to be more noisy than a FM signal upon transmission through a channel?
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0
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2458
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December 10, 2016
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Compute the L-C product of a tuned amplifier circuit required to generate a, carrier wave of 1 MHz for amplitude modulation
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0
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1086
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December 10, 2016
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In the given block diagram of a receiver, identify the boxes labelled as X and Y and write their functions
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1
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2153
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December 10, 2016
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Define modulation index.Why is its value kept,in practice less than one?
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1
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5715
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December 10, 2016
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A modulating signal is a square wave as shown in the figure
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1
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2675
|
December 10, 2016
|
An amplitude modulated wave is as shown in the figure. Calculate
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1
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2380
|
December 10, 2016
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Write physical significance of modulation index
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0
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7921
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December 10, 2016
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Which mode of propagation is used by short wave
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1
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3318
|
December 10, 2016
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For ground wave transmission, size of antenna l should be comparable to wavelength of the signal
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1
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3097
|
December 10, 2016
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Distinguish between any two types of propagation of electromagnetic waves
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1
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7046
|
December 10, 2016
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If the sum of the heights of transmitting and receiving antenna
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1
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4556
|
December 10, 2016
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Why is communication using line of sight mode
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1
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2479
|
December 10, 2016
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Which mode of propagation is suitable for television broadcast
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1
|
4571
|
December 10, 2016
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Why is this mode of propagation limited to frequencies upto a few MHz?
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1
|
1040
|
December 10, 2016
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What is the range of frequencies used for TV transmission?
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1
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4435
|
December 10, 2016
|
What fraction of the surface area of the earth
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1
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2146
|
December 10, 2016
|
“A communication satellite is essentially a repeater station in space.”
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1
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1554
|
December 10, 2016
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Distinguish between sinusoidal and pulse-shaped signals
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1
|
2702
|
September 9, 2016
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A (sinusoidal) carrier wave
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1
|
2279
|
September 9, 2016
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Write three important factors which justify the need of modulating
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1
|
2514
|
September 9, 2016
|
Write two basic modes of communication
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1
|
4914
|
September 9, 2016
|
Draw a block diagram of a detector for AM signal and show,
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1
|
5428
|
September 9, 2016
|
Explain any two factors which justify the need of modulating a low frequency signal
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1
|
7117
|
September 9, 2016
|
Define modulation index
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1
|
6815
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit a message signal
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1
|
6566
|
September 9, 2016
|
In the block diagram of a simple modulator for obtaining
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1
|
4553
|
September 9, 2016
|
Describe briefly the three factors which justify
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1
|
2793
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit
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1
|
541
|
September 9, 2016
|
A carrier wave of frequency 1.5 MHz and amplitude
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1
|
4430
|
September 9, 2016
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A message signal of frequency
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1
|
2013
|
September 9, 2016
|