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Name of the College : DMI College OF Engineering
Department : Electronics & Communication Engineering
Subject Code/ Name : EC6304 Electronic Circuits – I
Degree : B.E
Year : II
Website : dmice.ac.in
Document Type : Question Bank

Electrical Engineering & Instrumentation : https://www.pdfquestion.in/uploads/dmice.ac.in/1715-EC6304.doc

DMI Electronic Circuits – I Question Paper

UNIT – I

PART – A :
1. What is biasing?
2. What are the types of biasing?
3. Define DC load line.
4. Define quiescent point.
5. Define AC load line.

Related : DMI College OF Engineering EC2301 Digital Communication B.E Question Bank : www.pdfquestion.in/1722.html

6. Define stability factor.
7. Why voltage divider bias is preferred over other types of biasing ?
8. Which biasing is called as universal bias stabilization?
9. Define Stabililty.
10. What are the parameters that affect the stability .
11. Define stability factor w.r.t ? , Vbe , Ico .
12. Write the difference between FET & BJT .
13. Write the types of FET biasing.

14. What is the need for compensation technique.
15. Write the expression for stability factor of Base bias.
16. Write the general expression for stability factor.
17. Write the application of JFET.
18. What are the parameters that operating point depends upon?
19. Define stabilization.
20. What is thermal resistance?

UNIT – II

PART – A :
1. Write the procedure to draw the a.c. equivalent of a network.
2. What is meant by single stage amplifier?
3. What are the techniques employed in improving input impedance?
4. Write the hybrid equations of CE amplifier.
5. Write the hybrid equations of CB amplifier.
6. Write the hybrid equations of CCamplifier.
7. What is meant by hybrid parametes?
8. What are the benefits of h parameters?
9. Define millers theorem.
10. Write the uses of CE amplifier.
11. Write the characteristics of CB amplifier.
12. What is bootstrapping.
13. What are the characteristics of CE amplifier.
14. What is meant by differential amplifier?
15. State differential and common mode gain.
16. Define CMRR.
17. What does bootstrapping means?
18. Define bisection theorem.
19. State the advantages of differential amplifier.
20. Why constant current source biasing is preferred for differential amplifier ?
PART B :
1. Define voltage divider bias &derive stability factor for the same.
2. Discuss the source self bias and voltage divider bias for FET.
3. Discuss the different types of biasing used in FET.
4. What is the need for biasing? Explain the different types of biasing circuits.
5. What is DC load line? How will you select the Q Point? Explain it using CE Amplifier.
6. Explain the voltage divider biasing circuit for N- Channel JFET. Give its DC analysis.
7. How is JFET used as voltage variable resistor?
8. Draw the self bias circuit for JFET to be biased in the pinch off region given Vdd = 20, Vgsoff = -4 V, Idss= 8 mA. Draw and design the circuits.
9. Discuss the varies techniques of stabilization of Q Point in a transistor.
10. Discuss thermistor and sensistor compensation techniques.

UNIT – III

1. For CC transistor amplifier find the expressions for input impedance and voltage gain. Assume suitable for the transistor.
2. Discuss the working of basic emitter coupled differential amplifier circuit and derive the transfer characteristics for the same.
3. How would you improve the CMRR in a emitter coupled differential amplifier.
4. Draw and explain the H-paramenter model for CE transistor and derive input impedance, output impedance, current gain and voltage gain.
5. Draw and explain the circuit for improving the input impedance (Darlington Amplifier).
6. What is the small signal equivalent circuit for a emitter follower. Derive input impedance, output impedance, current gain and voltage gain.
7. Compare CB, CE and CC amplifier in terms of h-parameters.
8. Employ boot strapping technique in emitter follower circuit and derive its input impedance.
9. Discuss in detail the working of cascade amplifier and derive input impedance, output impedance, current gain and voltage gain.
10. What is the difference between the cascade and cascode amplifer. Discuss cascade amplifier and derive input impedance, output impedance, current gain and voltage gain.