Mahatma Gandhi University (MGU) 2009 B.Tech Electrical Engineering , model - Question Paper

B.TECH DEGREE EXAMINATION, MODEL ques.
First and 2nd Semester
EN010 108: BASIC ELECTRICAL ENGINEERING
(Common to all Branches)
Time: 3 Hours
Maximum: 100 Marks
Part A
ans all ques.. every ques. carries three marks
1.
2. Write the formula for converting a Delta connected network to equivalent star connected network
3. and vice versa.
describe RMS value, avg. value and Form factor.
discuss the necessity of starter in a DC motor.
4. elaborate the various kinds of single phase induction motor?
5. Distinguish ranging from a feeder, distributor and service mains.
(5 × three = 15 marks)

Part B
ans all ques.. every ques. carries five marks
6. In the circuit shown in fig: obtain the total current from the supply and the current in 90O resistor.
7. Derive the expression for the RMS value of a sinusoidal voltage.
8. Derive the emf formula of single phase transformer.
9. A50Hz , four pole 3phase Induction motor has a rotor current of frequency 2Hz.Determine i)the slip and ii)
the speed of the motor.
10. elaborate the requirements of a good lighting system?
(5 × five = 25 marks)

Earning:   Approval pending.