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Tuesday, November 29, 2016

EC6201 Electronic Devices Nov Dec 2016 Important Questions

Important questions / expected questions for Nov Dec 2016 EC6201 Electronic Devices examinations conducting by Anna University Chennai
Second Semester / 02nd Semester / II Year
Electronics and Communication Engineering
EC6201 Electronic Devices
(Regulation 2013)
Nov Dec 2016 Important Questions

Important 16 Marks Questions (All five units) are listed for EC6201 Electronic Devices Subject

1. Describe the theory of PN junction and derive its diode current equation. (16)

2.  Demonstrate the operation of PN Junction under zero voltage applied bias condition and derive the expression for built in potential barrier. (16)

3. Examine the quantitative theory of PN diode currents. (16)

4. Evaluate the expression for transition capacitance and diffusion capacitance of a PN diode. (16)

5. (i) Explain the operation of PN junction under forward bias condition with its characteristics.(8)
(ii) Explain the drift and diffusion currents for PN diode.(8)

6. Explain h-model and π-model in detail. (16)

7. Evaluate the hybrid parameters for a basic transistor CC, CE configuration and give its hybrid model. (16)

8. (a) Demonstrate the short notes on: (i) Early effect (ii) ebers – moll model for BJT.(8)
(b) Develop  the comparison of CE, CC, CB configuration. (8)

9. Express the derivation for fβ and Draw the hybrid π model of BJT? (16)

10. Describe the Ebers – Moll and Gummel Poon-model. (16)

11. Explain the four distinct regions of output characteristics of the JFET? (16)

12. a) With the help of suitable diagram explain the working of different kinds of MOSFET? (8)
b) Illustrate the hybrid model of a transistor. (8)

13. Compare the following
b) n-channel MOSFET & p –channel MOSFET. (8)

14. Describe Early’s Base width in a transistor. How does it affect the input and output characteristics? (16)

15. Explain the FINFET circuit model with necessary diagrams & parameters? And the Dual gate MOSFET circuit model with necessary diagrams & parameters? (16)

16. Explain how a Zener is used in voltage regulation. (16)

17. Describe the Variable Capacitance characteristics of a Varactor diode and analyze its operation in typical circuit. (16)

18. Determine the Current- Voltage relationship of a Schottky Barrier diode and discuss its operation. (16)

19. Analyze the construction details and working principle of LASER diode. (16)

20. Give the working principle of Gallium Arsenide Device with neat diagram. (16)

21. Give the working principle of UJT with the help of equivalent circuit. (16)

22. Analyze the spectral output curves and radiation pattern of LED. (16)

23. (i) Write short notes on LCD (8)
(ii) Design a two transistor model of SCR. (8)

24. What is the working principle of solar cell and opto couplers? (16)

25. Determine the operation of UJT relaxation oscillator and R1 value from the conditions for turn-on and turn-off.(16)

For related study materials such as Previous Years Question Papers, Subject Notes, 2 Marks with Answers, 16 Marks with answers, Question Bank, Lecture Notes for EC6201 Electronic Devices, Use search box of our website,

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