Anna University Chennai 2005 B.E Mechanical Engineering /B.TECH :Electronics Engineering - Question Paper
Friday, 01 March 2013 03:55Web
B.E/B.TECH. DEGREE exam ,NOV/DEC 2005
2nd semester, Mechanical engineering
Electronics Engineering
Time:3 Hrs
Maximum: 100 marks
PART A (10 X two =20)
1. describe (a)extrensic semiconductor (b) intrinsic sermiconductor.
2. With regard to rectifiers describe ripple factor
3. What is meant by faithful amplification?How is it achieved?
4. State the applications of tuned amplifiers.
5. Bring out the difference bipolar junction and field effect transistors.
6. Specify the significance of negative feedback.
7. provide the merits and demerits of RC and LC oscillators
8. State barkhausen criterion.
9. Briefly discuss the working of JK flip flop.
10. State and prove Demorgans' theorem.
PART B (5 X 16 =80)
11. With neat circuit diagram discuss the working of Wien bridge oscillator
12. (a) With necessary input and output waeforms discuss the working of a center tapped full wave rectifier
OR
(b) discuss the V-I charecteristics of zener diode and show its act as a voltage regulator
13. (a) For common base and common emitter configurations draw the circuit and discuss their input ,output charecteristics
OR
(b) discuss the class B power amplifier with circuit
14 (a) define the working of unijunction transistor and discuss any 1 of its application
OR
(b) define the operation of SCR and discuss its V-I charecteristics
15 (a) With neat circuit diagram discuss the working of an astable multivibrator
OR
(b) Design a full adder and implement it using logic gates.
Earning: Approval pending. |