STUPIDSID
Solve any four:
1 (a)
Implement appropriate circuit to generate following waveform.
5 M
1 (b)
Draw small signal equivalent circuit of CS amplifier with voltage divider bias.
5 M
1 (c)
Explain need for cascading of amplifiers.
5 M
1 (d)
State and explain Barkhausen criteria.
5 M
1 (e)
Derive efficiency of Class A transformer coupled amplifier.
5 M
2 (a)
For the given circuit determine Zi, Zo, Av.
10 M
2 (b)
For the given circuit find Idq and VGSq. Also state in which operating region circuit works.
10 M
3 (a)
Draw and explain working of cascode amplifier.
10 M
3 (b)
For the given differential amplifier determine Icq, VCEq, AD and Acm.
10 M
4 (a)
Explain working of Wien-Bridge oscillator and give expression for frequency of oscillation.
10 M
4 (b)
Draw block diagram of voltage shunt -ve feedback amplifier and explain effect on i/p impedance, o/p impedance and gain.
10 M
5 (a)
For the E-MOSFET amplifier determine, Ri, Av & Ro.
10 M
5 (b)
Explain class B power amplifier and methods to remove cross over distortion.
10 M
Write short note on (any two):
6 (a)
Constant current source used in differential amplifier. (Wildar or Wilson type).
10 M
6 (b)
Crystal oscillator
10 M
6 (c)
Power MOSFETs.
10 M
6 (d)
Heat Sinks.
10 M
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