7 F2108 5 ‏سا‎ 738

Reg No.: _ Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, JULY 2018

Course Code: EE100 ^
Course Name: BASICS OF ELECTRICAL ENGINEERING

Max. Marks: 100 Duration: 3 Hours
PART A

Answer all questions, each carries 4 marks Marks

1 State Kirchhoff’s Current Law. Illustrate with a simple example. (4)

2 What is magneto motive force (MMF)? Explain MME and field strength. (4)

3 What is the difference between Time period and frequency of a periodic wave (4)

form? How are they related?

4 Describe any one method of connection used in ೩ 3-phase circuit and write the (4)
relation for current and voltage.

5 Distinguish between feeder, distributor and service mains in a secondary (4)
distribution system.

6 Why high voltage is used for electric power transmission? (4)

7 Derive the EMF equation of DC generator. (4)

8 Give the constructional details of a core type 3-phase transformer. (4)

9 Compare a Squirrel cage induction motor with a slip ring induction motor. (4)

10 Draw and explain the Torque —Slip Characteristics of a 3-phase induction motor. (4)

PART 13

MODULE (1-4)
Answer any four questions, each carries 10 marks
11 a) By Mesh Analysis find the currents flowing through 4 Q and 3 Q resistors in the (7)
following network
6Q 4Q
പം ----^^^----

42% 3೧ 6 10

b) Differentiate Real and Ideal Voltage sources with the help of graphs (3)
12 9) For the given network find the current through the resistor 3 ६2. (6)
100
2A 30 60 4A

|
b) Find the equivalent resistance between the terminals 1 and 2, for the given circuit. (4)
Take 7 ‏روب پت نج‎ and [515-185 ‏ہے سی ہے‎ ६2.