GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University
Subject Name: Process Control
Time: 10:30 AM TO 12:30 PM
Subject Code: 3151705
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020Subject Name: Process Control
Time: 10:30 AM TO 12:30 PM
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q1 | Marks |
| (a) With temperature control loop, explain the manipulated variable and controlled variable terms. | 03 |
| (b) Draw flow and Level control loop. | 04 |
| (c) List and explain seven control objectives of process control | 07 |
| Q2 | |
| (a) Describe the following terms (1)Process Load (2)Dead time | 03 |
| (b) What is FOPDT modeling method. | 04 |
| (c) Explain two position control with application area. | 07 |
| Q3 | |
| (a) What is importance of bias in Proportional control. | 03 |
| (b) Give features of P, 1 and D mode of control action. | 04 |
| (c) Derive the transfer function of two non-interacting tank. | 07 |
| Q4 | |
| (a) Define proportional band. Show the diagram’showing relation between different value of gain and PB. | 03 |
| (b) Explain the override control of A boiler with diagram. | 04 |
| Q5 | |
| (a) Explain closed loop tuning method for PID Controller with one example. | 07 |
| (b) What are the applications of mathematical modelling in process control are? | 03 |
| (c) What is integral windup? Draw the strategy for preventing windup. | 04 |
| Q6 | |
| (a) Explain proportional control scheme with features, limitations and its remedy. Provide neat sketch for support of the same. | 07 |
| (b) Show the Auctioneering control scheme for temperature control in tubular reactor. | 03 |
| (c) Explain direct and reverse action of a controller with suitable example. | 04 |
| Q7 | |
| (a) Explain the PI composite control mode in detail. | 07 |
| (b) Draw the scheme of pressure control in a reactor using split range control technique. | 03 |
| (c) Draw the diagram of selective control technique. | 04 |
| Q8 | |
| (a) Explain Cascade Control system in detail | 07 |
| (b) Give difference between feedback and feedforward control system. | 04 |
| (c) Explain Ratio control system with one suitable process example | 07 |
Date: 27/01/2021
Total Marks: 56
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