Download GTU BE/B.Tech 2018 Winter 6th Sem New 2160807 Digital Control System Question Paper

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Seat No.:

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B
Subject Code:2160807
Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY
E - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018

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Subject Name:Digital Control System
Time:02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.

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3. Figures to the right indicate full marks.
Date:07/12/2018

Q.1 (a) Comparison between digital Control System & analog control system with block diagram. 03
(b) What is Aliasing? Explain it by waveforms 04
(c) Explain the Basic Structure of Computer-Controlled. 07

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Q.2 (a) Write a short note on Digital Position Control System. 03
(b) Explain Practical Sample and Hold Circuit 04
(c) Explain the Basic Block Diagram of PLC and Explain the Ladder Diagram of AND Function. 07
OR
(c) Explain the Generalized Operational Block Diagram of Feedback Control System 07

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Q.3 (a) Explain the various Advantages offered by Digital Control 03
(b) Explain the Jury Stability Criterion. 04
(c) Write a short note on Digital Temperature Control System. 07
OR
Q.3 (a) Explain Properties of Z-transform any one. 03

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(b) Explain Conversion of State variable Modals to transfer Function 04
(c) Explain the z-Domain Description of System with Dead Zone with Necessary Equation. 07

Q.4 (a) Explain the Controllability and Observability. 03
(b) Explain Sampling and Quantization effect in detail. 04
(c) Design Phase Lag compensator using root locus plot. 07

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OR
Q.4 (a) Explain the reconstruction of analog signal 03
(b) Explain the Invariance property of 2 state variable system 04
(c) Explain the state variable analysis for a Multi-Variable system. 07

Q.5 (a) Explain BIBO stability in detail. 03

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(b) Explain Mathematical Modeling of Sampling Process. 04
(c) Explain the effect of High Gain on the Control system. Which are the Limiting factors for High Gain. 07
OR
Q.5 (a) Explain the Eigen Values and Eigen Vectors of a System 03
(b) Explain the relation between transfer function and state space model for a discrete time system. 04

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(c) Explain the design Specification & configuration of basic digital control system. 07