Anna University Questions  EE8407  Electrical Engineering and Control Systems  April May 2014, Computer Science and Engineering (CSE), Fourth Semester, Regulation 2012
Exam

B.E/B.Tech. (Full
Time) DEGREE END SEMESTER EXAMINATIONS

Academic
Year

April May 2014

Subject
Code

EE8407 
Subject
Name

Electrical Engineering And Control Systems 
Branch

Computer Science and Engineering

Semester

Fourth Semester

Regulation

2012

B.E
/ B.Tech. (Full Time) DEGREE END SEMESTER EXAMINATIONS, APRIL / MAY 2014
Computer Science
and Engineering
Fourth Semester
EE8407
ELECTRICAL ENGINEERING AND CONTROL SYSTEMS
(Regulations 2012)
Time : 3 Hours Answer A L L Questions Max. Marks 100
PARTA
(10 x 2 = 20 Marks)
1. Define Dependent and independent
sources and its representation neatly.
2. Define the phasor representation of
a RL series circuit.
3. Define the operating principle of a
DC motor.
4. Write down the applications of
Series motor and compound motor.
5. Draw the slip ring induction motor
neatly.
6. Derive the impedance relationship
for transformer referred to primary side.
7. Derive the mathematical model of
liquid level system.
8. Draw the block diagram of dc
position control closed loop feedback system.
9. Represent the general second order
system and its coefficient associated.
10. What is the necessity for state
diagram representation in control systems?
PartB
(5* 16 = 80 Marks)
11. Explain the types of DC generators
by its construction and plot its Internal and external characteristics. (16)
12. a) Find the current flowing
through the 6Ω resistor as shown in the figure using thevenin's theorem. (16)
(OR)
b) Calculate the value of R which will
absorb maximum power from the circuit of the figure shown below and also
compute the value of maximum power (16)
13. a) Explain the construction and
working principle of three phase induction motor briefly. (16)
(OR)
b) Explain double field revolving
theory of single phase induction motor and any two starting methods of single
phase induction motor. (16)
14. a) Derive the differential
equations for the given mechanical rotational system and find the Transfer
function using the equations of motions. (16)
(OR)
b) For the block diagram shown
determine the overall transfer function C(S)/R(S)
either using Block diagram or using
Mason gains formula (16)
15. a) Derive a relationship for time
response analysis of general second order system and plot its characteristics.
(OR)
b) Sketch the asymptotic gain and the
phase shift curves for the following transfer function G(s) = 20s/[(s+1
)(s+10)]
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