Subject Code: 161905
GUJARAT TECHNOLOGICAL UNIVERSITY
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SEMESTER-VI(OLD) - EXAMINATION - SUMMER 2019
Subject Name: Control Engineering
Time: 10:30 AM TO 01:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Justify “Spring is a non-linear element over and arbitrary range of Extension”. 07
(b) Write Requirements of a good control system. Critically compare Open loop and Closed loop systems. Is an automatic electric iron an open loop or closed loop control system? 07
Q.2 (a) Briefly explain Signal flow graphs with their properties. Also explain Mason’s gain equation for signal flow graph. 07
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(b) Write short note on: Analogue models of mechanical and electrical system. 07
OR
(b) What does a block diagram represent? Explain it in detail. List its salient characteristics. 07
Q.3 (a) Derive the Mathematical modeling of a thermal system. 07
(b) Explain liquid level system with block diagrams and reduce it to a single block open loop system. Where, Q = Flow rate from control valve to 1st tank, Q1 = Flow rate from 1st tank to 2nd tank, Q2 = Flow rate from 2nd tank, H1 = Height of liquid in 1st tank, H2 = Height of liquid in 2nd tank. 07
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OR
Q.3 (a) What is Transfer function? Obtain the transfer function of mechanical network shown in Figure. 07
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
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