Control System 2018 Question Paper — Government College of Engineerin…

The 2018 Control System previous year question paper (Government College of Engineering and Technology, Jammu), with every question and its marks.

Instructions

Attempt total five questions, selecting at least two questions from each section.
Assume missing data wherever necessary.

Q1. (a) Distinguish between feedback control system and feed forward control system. What are the difficulties associated feed forward system. (10) (b) Explain the direct and inverse analogous networks with suitable example. (10) [20 marks]
Q2. Obtain the expression for $C_1$ and $C_2$ for the given multiple input and multiple output system using Block Diagram Reduction Technique : (20) For the block diagram shown: [20 marks]
Q3. For unity feedback system having $G(s) = \frac{10(s+1)}{s^2(s+2)(s+10)}$. Determine the following : (i) Type of system (ii) Error coefficients (iii) Steady State error for input as $1 + 4t + \frac{t^2}{2}$. (20) [20 marks]
Q4. (a) Explain the principle of operation of Stepper Motor with suitable diagram. (10) (b) Discuss AC and DC position Control System in detail. (10) [20 marks]

Q5. A feedback system has $G(s) H(s) = \frac{100(s+4)}{s(s+0.5)(s+10)}$. Draw the Bode Plot and comment on Stability. (20) [20 marks]
Q6. (a) Explain the concept of Gain Margin and Phase Margin in detail. (10) (b) Examine the stability of the following function by using Routh's Criterion : $s^6 + 2s^5 + 8s^4 + 12s^3 + 20s^2 + 16s + 16 = 0$ (10) [20 marks]
Q7. Explain Proportional Derivative (PD), Proportional Integral (PI) and Proportional Integral Derivative (PID) controllers in detail. (20) [20 marks]
Q8. Discuss the design of phase lead and phase lag networks using Root Locus Technique. (20) [20 marks]