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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2537
|
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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1161
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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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2253
|
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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6087
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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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2765
|
December 10, 2016
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An amplitude modulated wave is as shown in the figure. Calculate
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1
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2500
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December 10, 2016
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Write physical significance of modulation index
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0
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8033
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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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3384
|
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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3157
|
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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7144
|
December 10, 2016
|
If the sum of the heights of transmitting and receiving antenna
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1
|
4698
|
December 10, 2016
|
Why is communication using line of sight mode
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1
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2533
|
December 10, 2016
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Which mode of propagation is suitable for television broadcast
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1
|
4667
|
December 10, 2016
|
Why is this mode of propagation limited to frequencies upto a few MHz?
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1
|
1088
|
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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4503
|
December 10, 2016
|
What fraction of the surface area of the earth
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1
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2202
|
December 10, 2016
|
“A communication satellite is essentially a repeater station in space.”
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1
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1601
|
December 10, 2016
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Distinguish between sinusoidal and pulse-shaped signals
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1
|
2772
|
September 9, 2016
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A (sinusoidal) carrier wave
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1
|
2359
|
September 9, 2016
|
Write three important factors which justify the need of modulating
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1
|
2566
|
September 9, 2016
|
Write two basic modes of communication
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1
|
4997
|
September 9, 2016
|
Draw a block diagram of a detector for AM signal and show,
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1
|
5568
|
September 9, 2016
|
Explain any two factors which justify the need of modulating a low frequency signal
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1
|
7189
|
September 9, 2016
|
Define modulation index
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1
|
6885
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit a message signal
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1
|
6675
|
September 9, 2016
|
In the block diagram of a simple modulator for obtaining
|
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1
|
4686
|
September 9, 2016
|
Describe briefly the three factors which justify
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1
|
2843
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit
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|
1
|
593
|
September 9, 2016
|
A carrier wave of frequency 1.5 MHz and amplitude
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1
|
4515
|
September 9, 2016
|
A message signal of frequency
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1
|
2107
|
September 9, 2016
|