GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
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Subject Code:2160407 Date:27/11/2018
Subject Name:Instrumentation and Control for Bioengineering
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) Define first order and second order system. | 03 |
| (b) What is damping parameter? Discuss its physical significance | 04 |
| (c) Discuss in details different Static and Dynamic Characteristics of an Instrument. | 07 |
| Q.2 (a) Derive Laplace transform of Unit Step Function. | 03 |
| (b) Discuss different forcing functions in brief. | 04 |
| (c) Solve the following differential equation by Laplace transform. d²x/dt² + 2 dx/dt + x = 0, x(0)=x'(0)=0 | 07 |
| OR | |
| (c) Find the inverse of the following functions. (i) F(s) = 1/(s(2s+1)) (ii) G(s) = 1/(s(s²-2s+5)) | 07 |
| Q.3 (a) Write essential elements of a control system. | 03 |
| (b) Derive transient response of a first order system to a unit step change in input. | 04 |
| (c) Derive transfer function of a U-tube manometer. | 07 |
| OR | |
| Q.3 (a) Define servo and regulator mechanism control mechanism with one example of each. | 03 |
| (b) Differentiate between negative and positive feedback systems. | 04 |
| (c) Derive the transfer function for Mercury in glass thermometer clearly indicating the assumption made. | 07 |
| Q.4 (a) What are parts of a measuring instrument? | 03 |
| (b) Explain with example feedback and feed forward control system. | 04 |
| (c) Determine the stability of the system having the open loop transfer function G(s) = K(s+1) / (s(s+2)(s+3)) | 07 |
| Q.4 (a) What is a final control element? | 03 |
| (b) Find C/R for the given control system. | 04 |
| (c) Discuss in details about P, PI, PD and PID controllers. | 07 |
| Q.5 (a) What is thermal well? Why is it used? | 03 |
| (b) Explain the construction and working of Bimetallic thermometer. | 04 |
| (c) With neat sketch discuss principle construction and working of a bourdon tube pressure gauge. | 07 |
| OR | |
| Q.5 (a) List different types of a pyrometer. | 03 |
| (b) Describe various level measurement methods? | 04 |
| (c) Explain the construction and working of Rotameter. Write its advantages over Venturimeter. | 07 |
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