Tuesday, October 11, 2016

EE2203 Electronic Devices and Circuits May June 2014 Question Paper

Anna University Chennai
Question Paper Code : 51433
B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014.
Third Semester
Electrical and Electronics Engineering
EE 2203/EE 35/080280018/10133 EE 305 A — ELECTRONIC DEVICES AND CIRCUITS
(Regulation 2008/2010)
(Common to PPEE 2203 — Electronic Devices and Circuits for B.E. (Part-Time)
Second Semester Electrical and Electronics Engineering and Computer Science and Engineering — Regulation 2009)
Time : Three hours
Maximum : 100 marks

Note: New Subject Code in R-2013 is EC6202

Answer ALL questions.
PART A — (10 x 2 = 20 marks)
1.Relate voltage and current of forward biased pn junction diode.
2.Differentiate LED and LCD.
3.What are the operating modes of BJT with reference to junction biasing?
4.What are opto-couplers and list its applications.
5.Draw the drain characteristics of .FET and indicate important operating regions.
6.Compare BJT, FET and MOSFET.
7.Define CMRR of differential amplifier.
8.State the conditions to obtain sustained oscillations in oscillator circuit?
9.What is meant by hysteresis in Schmitt trigger?
10.Mention few applications of multi-vibrators.

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