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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2497
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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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1116
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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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2187
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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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5803
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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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2720
|
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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2433
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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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7964
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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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3344
|
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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3120
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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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7077
|
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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4616
|
December 10, 2016
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Why is communication using line of sight mode
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1
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2500
|
December 10, 2016
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Which mode of propagation is suitable for television broadcast
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1
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4619
|
December 10, 2016
|
Why is this mode of propagation limited to frequencies upto a few MHz?
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1
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1057
|
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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4461
|
December 10, 2016
|
What fraction of the surface area of the earth
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1
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2165
|
December 10, 2016
|
“A communication satellite is essentially a repeater station in space.”
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1
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1570
|
December 10, 2016
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Distinguish between sinusoidal and pulse-shaped signals
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1
|
2724
|
September 9, 2016
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A (sinusoidal) carrier wave
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1
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2315
|
September 9, 2016
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Write three important factors which justify the need of modulating
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1
|
2534
|
September 9, 2016
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Write two basic modes of communication
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1
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4944
|
September 9, 2016
|
Draw a block diagram of a detector for AM signal and show,
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1
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5486
|
September 9, 2016
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Explain any two factors which justify the need of modulating a low frequency signal
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1
|
7147
|
September 9, 2016
|
Define modulation index
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1
|
6841
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit a message signal
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1
|
6609
|
September 9, 2016
|
In the block diagram of a simple modulator for obtaining
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1
|
4606
|
September 9, 2016
|
Describe briefly the three factors which justify
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1
|
2816
|
September 9, 2016
|
A carrier wave of peak voltage 12 V is used to transmit
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1
|
561
|
September 9, 2016
|
A carrier wave of frequency 1.5 MHz and amplitude
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1
|
4468
|
September 9, 2016
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A message signal of frequency
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1
|
2052
|
September 9, 2016
|