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211002

Reg. No. Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SECOND SEMESTER B.TECH DEGREE EXAMINATION, JUNE 2017

Course Code: 0
Course Name: BASICS OF ELECTRICAL ENGINEERING

Max. Marks: 100 Duration: 3 Hours

11.

ചര്‌ க
Answer all questions, each question carries 4 marks.

A resistor of 5 ೧ is connected in parallel with a resistor of र] ೧. This combination is
connected in series with an unknown resistor of ಔ) Q and the complete circuit is then
connected to 50 ५ ‏عل‎ supply. Calculate the values of R; and Ro, if the power
dissipated by the unknown resistor 8) is 150 W with 5۸ passing through it.

Derive an expression for energy stored in a magnetic circuit.

What are the advantages of three phase systems?

Derive an expression for three phase power in a star connected system.
What are the advantages of renewable sources?

What are the advantages of high voltage transmission?

What are the losses in a transformer? How these losses can be reduced?
With the help of diagrams, explain how de motors are classified.

Define synchronous speed and slip of a three phase induction motor.

. Explain the constructional details of a single phase induction motor.

PART B
MODULE (1-4)
Answer any four questions, each question carries 10 marks

a. Determine the power dissipated in all the three resistors in the following figure
using mesh current analysis. (5)

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