Gujarat Technological UniversitySummer 2024 examination

GTU 3150504 Instrumentation and Process Control Summer 2024 Question Paper & PDF

B.E. · Chemical Engineering · Semester 5 · Subject code 3150504
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 2:30 PM – 5:00 PM
Questions
5 with internal choice
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Q.1

14 Marks
(a)
3 marks
Give resistance capacitance lag for following systems: (1) Liquid filled thermometer (2) Liquid level in a tank (3) Mixing tank
(b)
4 marks
Discuss the importance of process control in chemical industry.
(c)
7 marks

Derive transfer function for first order system using mercury in glass thermometer using suitable assumptions.

Q.2

14 Marks
(a)
3 marks
Differentiate between Open loop and closed loop control system.
(b)
4 marks
Discuss servo problem and regulator problem.
(c)
7 marks

Define second order system. Derive the transfer function of U-Tube Manometer in which pressure P is acting in one limb and other limb is open to the atmosphere.

(c)
7 marks

For two interacting first order liquid level systems derive the transfer function.

Q.3

14 Marks
(a)
3 marks

Draw the general block diagram of a simple control system with positive feedback and explain each term.

(b)
4 marks
Explain air to open & air to closed control valve with neat sketch.
(c)
7 marks

A step change of magnitude 4 is introduced into a system having the transfer function

y(s)x(s)=161.5s2+2.4s+6\frac{y(s)}{x(s)} = \frac{16}{1.5s^2 + 2.4s + 6}
Determine (a) Percent overshoot (b) Rise time (c) Period of oscillation (d) Natural period of oscillation

(a)
3 marks
Discuss the various components of a control system with example.
(b)
4 marks
Derive and discuss the transfer function for PI & PD controller.
(c)
7 marks
Explain in details the terms used to describe an underdamped system.

Q.4

14 Marks
(a)
3 marks
Describe PLC and SCADA in brief.
(b)
4 marks

Discuss Phase margin and Gain margin using stability criteria for Bode diagram.

(c)
7 marks

Given the characteristic equation, determine the stability by the Routh criterion

s4+3s3+5s2+4s+2=0s^4 + 3s^3 + 5s^2 + 4s + 2 = 0

(a)
3 marks
Mention advantages and disadvantages of Distributed Control System
(b)
4 marks

What are Bode diagrams? Explain the graphical rules for Bode diagrams.

(c)
7 marks
Explain Nyquist stability criteria.

Q.5

14 Marks
(a)
3 marks
Discuss the principal of measurement in Bimetallic Thermometer.
(b)
4 marks
Explain any two static and dynamic characteristics of an instrument.
(c)
7 marks
Discuss pressure spring thermometer with neat sketch
(a)
3 marks
Discuss the principal of liquid level measurement in bubbler system
(b)
4 marks
Explain working of optical pyrometer with schematic
(c)
7 marks
Discuss construction and working of Rotameter.

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About this paper

Official Gujarat Technological University (GTU) examination paper for Instrumentation and Process Control (Summer 2024, B.E. · Chemical Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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