ChE381 Process Dynamics & Control
Jan-Apr 2014
End-semester exam
3 hours; 100 points
1. A second-order system is given by the transfer function
G(s) =
Kp
2 s2 + 2 s + 1
(a) Determine the response of this system to a unit step input for = 1.
[7 points]
(b)
ChE381 Process Dynamics & Control
Jan-Apr 2013
Paper A
30 minutes; 20 points
Quiz 2
1. The crossover frequency associated with a feedback loop employing a proportional
controller to control the process described by the transfer function
G(s) =
2 exp[s]
(
NAME:
ROLL #:
ChE381 Process Dynamics & Control
Jan-Apr 2013
Paper A
45 minutes; 20 points
Quiz 1
Fill your name and roll no. above.
Circle the correct answer among the four choices given.
2 marks for a correct answer. Negative marking: One point will
ChE381 Process Dynamics & Control
Jan-Apr 2013
Mid-semester exam
2 hours; 70 points
1. Consider the parallel arrangement of two rst-order systems, each described by their
individual transfer functions g1 (s) = K1 /(1 s + 1) and g2 (s) = K2 /(2 s + 1). [15
NAME:
ROLL #:
SOLUTION KEY
ChE381A Process Dynamics & Control
Jan-Apr 2014
Paper B
Quiz 1
30 minutes; 16 points
2 marks for a correct answer. Negative marking: One point will be deducted per wrong
answer.
1. The poles of the transfer function
G(s) =
are
NAME:
ROLL #:
ChE381A Process Dynamics & Control
Quiz 2
Jan-Apr 2014
Paper A
30 minutes; 18 points
3 points for a correct answer. Negative marking: Two points will be deducted per wrong
answer.
1. For a rst-order lead system with transfer function g(s) =
NAME: SOLUTION KEY
ROLL #:
ChE381A Process Dynamics & Control
Jan-Apr 2014
Paper A
Quiz 1
30 minutes; 16 points
2 marks for a correct answer. Negative marking: One point will be deducted per wrong
answer.
1. The ultimate steady-state response of the syst
NAME:
ROLL #:
ChE381A Process Dynamics & Control
Quiz 2
Jan-Apr 2014
Paper B
30 minutes; 18 points
3 points for a correct answer. Negative marking: Two points will be deducted per wrong
answer.
1. Which of the following statements are FALSE for a PI cont