STUPIDSID
Solve any four of the following
1(a)
Why IF is selected as 455 Khz in AM?
5 M
1(b)
Distinguish between narrow band FM and wideband Fm.
5 M
1(c)
What are the cause of fold over distortion? How it can be prevented?
5 M
1(d)
Explain double spotting with reference to radio receiver.
5 M
1(e)
Define noise figure and signal to noise ratio.
5 M
2(a)
One input to AM modulation is 500 Khz carries with an amplitude to cause a change in o/p wave of &pm
10 M
2(b)
Explain practical diode detector with delayed AGC.
10 M
3(a)
Explain indirect method of FM generation.
10 M
3(b)
Explain ratio detector in detail with suitable diagram.
10 M
4(a)
Explain independent sideband technique in detail.
10 M
4(b)
Explain Super heterodyne radio receiver in detail with block diagram.
10 M
5(a)
Explain block diagram of adaptive delta modulator with waveforms.
10 M
5(b)
State and prove sampling theorem for pass band signal.
10 M
Write short notes on any four of the following
6(a)
PLL FM Demodulator
5 M
6(b)
Wquadrature Amplitude Modulation
5 M
6(c)
TDM and FDM
5 M
6(d)
Companding
5 M
6(e)
Aliasing Error and aperture effect.
5 M
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