Justify the following statements if true: (1) Feedback control systems are also referred to as closed–loop systems. (2) Fixed-time traffic light control system is an example of closed loop control system. (3) In a multivariable control system there is one input variable but variable outputs.
[7 marks]What do you understand by Transient and steady state response and hence discuss the various types of input test signals used for time response analysis of a control system
[7 marks]Define transfer function of a linear time invariant control system and hence discuss its properties. Also discuss the role of Laplace Transforms in system analysis.
[7 marks]What is modern control theory? Compare modern control theory with conventional control theory. Classify different types of control problems.
[7 marks]What is servo mechanism? Explain how it can be best applied for automation control? Explain servo mechanism in CNC machines.
[7 marks]What is system analogy? Describe analogy between following systems • Translational mechanical and Rotational mechanical systems. • Force and Voltage system. • Force and current system
[7 marks]Draw the signal flow graph of the block diagram shown in Fig and solve using Mason’s gain formula.
[7 marks]What is signal flow graph (SFD)? Write the steps for solving signal flow graph using Mason’s gain formula.
[7 marks]Explain transient response (time domain) specifications of second order control system with neat sketch.
[7 marks]Explain Routh’s stability criterion. What is Advantages and Disadvantages of Routh’s criterion?
[7 marks]Define: Root locus. Write steps for solving Problems on Root Locus.1
[7 marks]Find the range of gain for a system whose closed-loop transfer function is
[7 marks]Explain unit step response of first order system.
[7 marks]Compare hydraulic control system with pneumatic control system in detail. State the different applications of pneumatic control system.
[7 marks]Write short note on : control systems for thermal power plant
[7 marks]Write short note on: Programmable Logic controller (PLC).
[7 marks]Define fuzzy logic. Explain the concept of Fuzzy logic with a suitable example.2
[7 marks]