SKR Engineering College 2007 B.E Mechanical Engineering EE 1X02- BASIC ELECTRICAL & ELECTRONICS ENGINEERING - Question Paper

S.K.R. ENGINEERING COLLEGE
POONAMALLEE, CHENNAI-602103

I YEAR MECHANICAL ENGINEERING
EE 1X02- BASIC ELECTRICAL & ELECTRONICS ENGINEERING
MODEL TEST

Date: 13.03.07
Time: three Hrs Maximum: 100
ans ALL ques.
PART A [10 X two = 20]
1. State kirchoff’s laws?
2. Draw the power triangle of ac circuit & describe power factor?
3. Define Back EMF?
4. Compare Core & Shell kind transformers?
5. State Double Revolving Field Theory?
6. Define voltage regulation of an alternator?
7. Compare FET & BJT?
8. Give the classification of MOSFET?
9. Define Amplitude Modulation?
10. Draw the block diagram of an Modem Communication System?

PART B [5 X 16 = 80]

11. A) i. describe avg. & RMS values of AC volume. find the values of Vav,
Iav, Irms [8]
ii. compute the effective resistance of the subsequent combination of
Resistances and the voltage drop across every resistance when a potential
Difference of 60 V is applied ranging from points A & B. [8]







[or]
B) discuss the construction, principle of operation of an induction kind
Energy Meter with neat diagram. [16]
12. A) discuss the construction of DC Machine with neat diagram & discuss how the
Mechanical energy is converted into electrical energy? [16]
[or]
B) The OC & SC test on a 10 KVA 450 / 120 V, 50 Hz, single phase
Transformer gave the subsequent outcomes
OC Test: V=120V, I =4.2 A, W= 80 W [All on LV Side]
SC Test: V= 9.65V, I= 22.2 A, W = 120 W [With LV Shorted] [16]



13. A) find the Equivalent Circuit for 3 Phase Induction Motor. [16]
[or]

B) discuss the construction, principle of operation and kinds of alternator
With neat diagrams? [16]

14. A) describe transducer and discuss with 1 examples for Resistive, Inductive and
Capacitive Transducer? [16]
[or]

B) What is meant by rectifier and discuss any 2 kinds with functional diagrams

15. Define Telecommunication System and,
A) Explain with all necessary block diagrams of an telecommunication system
[or]

B) Explain in detail about fiber optic communication system?

Earning:   Approval pending.