GTU BE 6th Semester 162303 Plastic Process Instrumentation and Process Control Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VI (OLD) – EXAMINATION ? SUMMER 2018
Subject Code:162303 Date:28/04/2018
Subject Name:Plastic Process Instrumentation and Process Control
Time:10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Explain the block diagram of Instrumentation process with neat sketch. 07
(b) Explain various static characteristics of an instrument in brief. 07

Q.2 (a) Explain diaphragm pressure transducer with neat diagram. 07
(b) Describe the advantages and disadvantages of filled system thermometer with
neat sketch.
07
OR
(b) What are different methods of temperature measurement? Explain about
resistance thermometer.
07

Q.3 (a) Explain closed loop control system with neat diagram. 07
(b) Write a short note on thermocouples. 07
OR
Q.3 (a) Explain radiation pyrometer with neat diagram. 07
(b) Explain LVDT with neat diagram. 07

Q.4 (a) Explain Open loop control system with neat diagram. 07
(b) Explain Proportional, Integral & Derivative controllers. 07
OR
Q.4 (a) Explain Closed loop control system with neat diagram. 07
(b) Explain PI, PD & PID controllers. 07

Q.5 (a) Explain feed forward control system. 07
(b) Explain manometers. 07
OR
Q.5 (a) What are different parts of Injection molding machine? Explain its functions. 07
(b) Write a short note on dynamic characteristics of instrument system 07
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