ELECTRONIC CIRCUIT ANALYSIS ECE JNTU previous years question papers

ELECTRONIC CIRCUIT ANALYSIS JNTU previous years question papers

 Time: 3 hours Max. Marks.80
Answer any Five questions
All questions carry equal marks

1. Write the analysis of a CE amplifier circuit using h parameters. Derive the expressions for AI, AV, Ri, R0, AIs, AVs. (16)

2. (a) Sketch two RC-coupled CE transistor stages. Show the middle and low frequency model for one stage. Write the expressions for current gains. (12)
(b) Draw the circuit diagram of cascode amplifier with and without biasing circuit. What is the advantages of this. (4)

3. Draw the hybrid-pi model, explain and derive the conductance and capacitances. (16)

4. (a) How even harmonics is eliminated using push-pull circuit, derive the expression. (8)
(b) Write about the operation of a class D amplifier. (8)

5. (a) Derive the expression for bandwidth in terms of resonant frequency and quality factor in case of double tuned amplifiers. (10)
(b) Differentiate between synchronous tuned amplifiers and tapped tuned amplifiers. (6)

6. Design consideration for video amplifiers. (8)
(b) Explain about cascode video amplifier with neat diagram. (8)

7. Explain the operation of low and high voltage regulators using 723 IC. (16)

8. Explain the basic switching regulator and types of it with neat diagrams.

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