Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3153618 Process Instrumentation Dynamics And Control Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:3153618 Date:29/01/2021
Subject Name:Process Instrumentation Dynamics & Control
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the term: (i) Manipulated variable (ii) Controlled variable
03
(b) Write the mathematical representation of unit impulse function and derive
04
its Laplace transform
(c) Derive transfer function of mixing process with assumption.
07
Q.2 (a) State and prove final value theorem.
03
(b) Write down the type of second order system
04
(c) Explain the selection criteria for controllers.
07
Q.3 (a) Explain the term: (i) Transfer function (ii) Deviation variable
03
(b) Differentiate Servo problem and regulator problem.
04
(c) Mention the procedure steps of Routh test used to check the stability of a
07
control system
Q.4 (a) Enlist the assumption involved in mercury thermometer system.
03
(b) Mention the following terms relating to control system (i) set point
04
tracking (ii) disturbance rejection
(c) Find the stability of system using routh stability criteria having
07
characteristic equation: 4 + 83 + 182 + 16 + 5 = 0
Q.5 (a) Differentiate between P-Controller and On-Off Controller.
03
(b) Derive the step response of an underdamped second order system
04
(c) With neat sketch explain principle, working and function of radiation
07
pyrometer.
Q.6 (a) Derive transfer function of PI-Controller.
03
(b) A Control system is subjected to a step change of magnitude 10. The
04
transfer function of control system is expresses as
6
() =
.
0.92+0.3+10
Calculate overshoot, Decay ration, ultimate value of response, maximum
value of response
(c) Explain working and construction of bimetallic thermometers.
07
Q.7 (a) How stability is mentioned for linear systems?
03
(b) With a neat figure explain the construction and working of Pneumatic
04
Control Valve?
(c) Describe the working of any one vacuum measuring instrument with a neat
07
sketch.
1
Q.8 (a)
1
Comment of stability of having Laplace transform
03
2+4+4
(b) Explain the component of control system
04
(c) Describe bubbler system for liquid level measurement with neat sketch.
07
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This post was last modified on 04 March 2021