ELECTRONIC CIRCUITS-I EC2205 ANNA UNIVERSITY NOV/DEC 2012 IMPORTANT QUESTIONS

Anna University, Chennai Nov/Dec 2012 Examinations

Rejinpaul.com Important Questions

ELECTRONIC CIRCUITS-I EC2205

III Sem ECE

Unit I-V

1.     Derive the stability factor for voltage divider bias

2.     Describe how DC and AC load lines are drawn

3.     What is meant by bias stability what are the factors affect the bias stability

4.     Explain briefly about compensation technique

5.     Discuss the operation of Differential amplifier

6.     Analyze the small signal transistor amplifier in term of h parameter

7.      Draw the hybrid model of CE configuration obtain its gain, input impedance compare the performance of this amplifier with CC&CB configuration

8.     With small equivalent circuit of emitter follower  derive its input impedance, Av , and output impedance

9.     Draw the small signal model of FET  and  analyze source follower

10.Analyze Darlington type input impedance increasing method

11.Derive the Expression for Ai, Av, Ri, and Ro for CE amplifier using  h parameter model

12.Explain the methods to improve the CMRR    

13.Draw and explain class B push-pull power amplifier

14.Explain briefly about Total Harmonic distortion

15.Explain the power control method using SCR

16.Prove that maximum efficiency of class B power amplifier is 78.50%

17.Explian the working principle of class D amplifier what is its efficiency

18.Draw the block diagram of SMPS what are its advantage

19.Draw .the Hybrid (pie)  model of transistor and derive the various parameters

20. Describe the working principle of full wave rectifier and derive the expression  for the ripple factor ,rectifier efficiency,Vdc,Idc,Vrms,Irms?