Mahatma Gandhi University (MGU) 2007 B.Tech Computer Science and Engineering Solid State Electronics - Question Paper

B.TECH DEGREE EXAMINATION, JULY / AUGUST 2007
Third Semester
Branch: Computer Science / info Technology

SOLID STATE ELECTRONICS – (R.T)
(Improvement/ Supplementury)

Time: 3 Hours Maximum: 100 Marks

ans all ques.

Part A
1. Explain the need of biasing
2. What are the features of emitter follower configuration?
3. Define (i) Saturation voltage; (ii) Pinch-off voltage and (iii) Threshold voltage of JFET.
4. What are the advantages of MOSFET over JFET?
5. What are the conditions for oscillation of a circuit?
6. Compare the characteristics of LC oscillators.
7. Draw and discuss the circuit of a slicer.
8. What are the characteristics of Bootstrap sweep generator?
9. What is meant by regulated power supply?
10. Discuss the basic concepts of opto coupler.
(10 X four = 40 Marks)
Part B
11.(a) elaborate the various methods of cascading transistors? discuss every with necessary figures. (12 marks)
(b) discuss with diagrams the frequency response of an RC coupled amplifier. elaborate the effects of cascading on frequency response? (12 marks)

12. (a) Draw and discuss the circuit of an FET amplifier. explain its transfer characteristics. (8 marks)
(b) Differentiate ranging from depletion and enhancement kind MOSFETS. (4 marks)

(Or)

12. (c) discuss with diagrams the biasing techniques of MOSFET. (8 marks)
(d) elaborate the precautions to be taken while handling MOSFETS? (4 marks)

13. (a) discuss with figures the principle of operation of Wienbridge Oscillator. What is its frequency of oscillation. (12 marks)

(Or)

(b) Draw and discuss the circuit of Hartley oscillator. What is its frequency of oscillation? (12 marks)

14. (a) discuss with diagrams and waveforms the principle of operation of an astable multivibration. (12 marks)
(Or)
(b) discuss with diagrams and waveforms the principle of operation Bootstrap sweep generator. (12 marks)

15. (a) discuss with figures the principles of operation of (i) photodiode and (ii) phototransistor. (12 marks)
(Or)
(b) discuss with diagrams the principle of operation of UJT. elaborate its applications? (12 marks)
[5 X 12 = 60 marks]

Earning:   Approval pending.