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Anna University Question Paper Code : 57016 1
B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014.
Time. : Three hours
Second Semester
Electronics and Communication Engineering
EC 6201 — ELECTRONIC DEVICES
(Regulation 2013)
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ANNA UNIVERSITY SYLLABUS: CLICK HERE
PART A — (10 x 2 = 20 marks)
1. Define mass action Law.
2. What is the principle operation of A PN Junction diode in reverse bias condition?
3. What is the need for biasing in the transistor?
4. Draw the .h parameter model for CE transistor.
5. In which region JFET acts as a resistor and why?
6. Differentiate between JFET and BJT.
7. Draw the energy band diagram of metal and semiconductor Wore and after conduction is made.
8. List out the applications of tunnel diode.
9. Draw the basic structure of TRIAC and its symbol.
10. Write down the significance of Opto coupler.
PART B — (5 x'16 = 80 marks)
11. (a) Explain the theory of PN junction diode and derive its diode current equation. (16)
Or
(b) Explain and derive current components and switching characteristics of . diode. (16)
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