STUPIDSID
1(a)
State and compare different SSB generation method.
6 M
2( b)
Derive an expression for frequency and phase modulated wave. Sketch their waveforms for a sinusoidal input.
6 M
2(a)
With the help of spectrum and block diagram explain VSB modulation. What is its application?
6 M
3(a)
Explain distortions present in simple diode detector.
6 M
3(b)
State various sources of noise with examples. Explain the following types of noise in detail (any two)
i) Thermal noise
ii) Low frequency noise
iii) Shot noise.
i) Thermal noise
ii) Low frequency noise
iii) Shot noise.
6 M
4(a)
Explain performance characteristics of ratio receiver with suitable graphs.
6 M
4(b)
Consider a receiving system consisting of an RF amplifier with a noise figure of F1 = 2 dB and a gain of 9 dB followed by a mixer with a noise figure of F2 = 9 dB and a conversion gain of 15 dB. Calculate overall noise figure and noise temperature.
6 M
5(a)
Describe threshold in angle modulation.
7 M
5(b)
Explain the performance of DSBSC in presence of noise.
6 M
6(a)
Explain the performance of AM in presence of noise.
7 M
6(b)
Explain pre-emphasis and de-emphasis in FM.
6 M
7(a)
Explain aliasing and different ways to avoid aliasing.
7 M
7(b)
With the help of block diagram explain tramsmitter and receiver for Pulse code modulation.
6 M
8(a)
Explain types of sampling with waveform. Which type is used for practical application?
7 M
8(b)
With the help of neat diagram explain PWM.
6 M
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