Basic Electrical and Electronics Engineering - Model question paper I

                  

                 B.E/B.TECH DEGREE EXAMINATION

                             Model Question paper I

                   Basic Electrical and Electronics Engineering

                            

                                Part-A (10×2=20 Marks)

1. State Ohm’s law.

2. Define average value.

3. What are the types of single phase induction motor?

4. Define voltage regulation.

5. What is PN junction? How its formed?

6. What is a rectifier?

7. Subtract (1010)₂ from (1111)₂

8. What are universal gates? Why are they called so?

9. What is aspect ratio?

10. Draw the block diagram of a communication system.

                             Part-B (5×16=80 Marks)

11. a) Wheat stone bridge circuit is made up of the following arms AB=260 Ω, BC=325 Ω, AC=260 Ω, BD=110 Ω, CD=20Ω. A voltage of 20 volts is applied between A and D. Find (a) the total equivalent resistance between A and D

(b) the total current supplied by the source

(c) the current through the element BC.                                                             (16)

                                      OR

b. Describe the working principle of  a moving coil ammeter.                           (16)

12. a. Explain the principle of operation of single phase transformer                 (16)

                                      OR

b. Explain the principle of operation of single phase induction motor & describe various starting methods of the same.

13. a. (i) Explain the operation of NPN transistor.                                               (8)

          (ii) Explain the action of a full wave rectifier.                                            (8)

                                      OR

          (i) Explain Zener diode voltage regulator.                                                 (8)

          (ii) Draw the circuit diagram of a CE amplifier circuit and explain briefly.(8)

14. a. Explain the operation of D flipflop, JK flipflop and T flipflop.                 (16)

                                      OR

      b. What is A/D Converter? Explain successive approximation register type A/D converter.                                                                                                           (16)

15. a. What is facsimile? How does it work?                                                       (16)

                                      OR

     b. Draw the block diagram of optical fibre communication system and explain it.(16)

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