GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Subject Name: Plastic Process Instrumentation and Process Control
Time: 02:30 PM TO 05:00 PM Total Marks: 70
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VI (New) EXAMINATION - WINTER 2019
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Subject Code: 2162303 Date: 04/12/2019Subject Name: Plastic Process Instrumentation and Process Control
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| MARKS | |
|---|---|
| Q.1 (a) | 1. Calibration is the process of by of the correct value of each scale reading on a meter. 03 2. The average deviation is an of the instruments. 3. Define: Precision |
| (b) | Explain basic elements of closed loop system. 04 |
| (c) | Explain Radiation pyrometer with neat sketch. 07 |
| Q.2 (a) | Explain open loop control system with neat diagram. 03 |
| (b) | Explain Seeback effect & thermocouple. 04 |
| (c) | With the neat sketch and brief explain contact and noncontact method of temperature measurement 07 |
| OR | |
| (c) | Explain different types of Manometers 07 |
| Q.3 (a) | Explain thermistors 03 |
| (b) | Write a short note on static characteristics. 04 |
| (c) | Explain construction, working, advantages & disadvantages of LVDT. 07 |
| OR | |
| Q.3 (a) | List different types of pressure transducers. 03 |
| (b) | Explain sources of error: 04 |
| (c) | Explain diaphragm pressure transducers with neat diagram. 07 |
| Q.4 (a) | Explain C type bourdon tube transducer. 03 |
| (b) | Explain derivative controllers. 04 |
| (c) | Explain Capacitive type pressure transducer 07 |
| OR | |
| Q.4 (a) | Describe piezoelectric pressure transducer. 03 |
| (b) | Explain open loop transfer function 04 |
| (c) | Explain Strain gauge pressure transducers with neat diagram. 07 |
| Q.5 (a) | Explain CASCADE control system. 03 |
| (b) | Explain closed loop transfer function. 04 |
| (c) | Describe the advantages and disadvantages of filled system thermometer with neat sketch. 07 |
| OR | |
| Q.5 (a) | Define Range, Dead zone & Accuracy. 03 |
| (b) | Define Calibration & explain general steps to perform it. 04 |
| (c) | Explain the total injection molding process control. 07 |
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