STUPIDSID
Solve any four from the following:-
1 (a)
Explain the steps to find lower cutoff frequency of the self biased JFET amplifier.
5 M
1 (b)
Explain the crossover distortion in class B power amplifier and how it can be over come.
5 M
1 (c)
With suitable example, state how Barkhausen criteria can be applied to oscillator circuit.
5 M
1 (d)
What is the need of constant current source in differential amplifier? Explain one of the circuit?
5 M
1 (e)
What are the characteristics of -ve feedback amplifier?
5 M
2
Design two stage of CS Amplifier for the given specification Av>150, FL=20Hz, V0=2.5 V, use self biased circuit with 1dq= IDS/4 use suitable JFET transistor.
20 M
3 (a)
Explain the concept of RC phase shift oscillator, draw its circuit diagram and derive equation of frequency.
10 M
3 (b)
Explain High frequency response of BJT amplifier.
10 M
4 (a)
Design class B power amplifier to give output power of 20 W to 8 Ω load.
10 M
4 (b)
Give classification of oscillators, explain one of the High frequency oscillator.
10 M
5 (a)
For the given circuit, identify type of feedback and find β, Av, AvP, Rif and Rof'.
hfe=100
hie=1.1 kΩ
Neglect hre & hoe
10 M
5 (b)
Explain class B push-pull amplifier with necessary waveform.
10 M
6 (a)
Derive equation of voltage gain, input resistance and output resistance for a Dual input, Balanced output differential amplifier.
10 M
6 (b)
Give topologies of different negative feedback amplifiers.
10 M
Write short notes on any three:-
7 (a)
Crystal Oscillator.
7 M
7 (b)
CASCODE Amplifier
7 M
7 (c)
Difference between Direct coupling and RC coupling
7 M
7 (d)
Nyquist Stability Criteria.
7 M
More question papers from Discrete Electronic Circuits