STUPIDSID
Solve any four:-
1 (a)
For the following clipper circuit sketch the i/p and o/p wave form write equation for Vo.
5 M
1 (b)
Compare BJT, JFET and MOSFET
5 M
1 (c)
Which components in an amplifier (CS and CE) circuit affect low frequency response? Explain.
5 M
1 (d)
State and explain Barkhansen's criteria.
5 M
1 (e)
Explain effect of swapping resistor in differential amplifier.
5 M
1 (f)
Derive expression of efficiency of clan A Transformer coupled amplifier.
5 M
2 (a)
Draw approximate hybrid π model of CE transistor amplifier and derive expressions for Av, Ai, Zi and Zo.
10 M
2 (b)
Determine operating point and draw DC load line for the circuit shown:-
10 M
3 (a)
Draw two stage CS-CS amplifier circuit and derive expressions for Av, Zi and Zo.
10 M
3 (b)
State different types of negative feedback topologies and explain current series in detail using block diagram.
10 M
4 (a)
Draw circuit diagram for dual i/p balanced o/p differential amplifier (using any type of devices) and derive expressions for Ad, Ac, CMRR and Ri.
10 M
4 (b)
Draw circuit diagram of colpitt's oscillator and explain it's working. State applications, advantages and disadvantages of this circuit.
10 M
5 (a)
Justify need for constant current source and explain any one in detail.
10 M
5 (b)
Explain working of class B (push-pull) power amplifier.
10 M
6 (a)
For the circuit shown find Av, Ri and Ro.
10 M
6 (b)
Draw High frequency model for CS JFET amplifier and explain.
5 M
6 (c)
Explain importance and need for biasing in amplifier.
5 M
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