Justify “Spring is a non liner element over and arbitrary range of Extension”.
[7 marks]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?
[7 marks]Briefly explain Signal flow graphs with their properties. Also explain Mason’s gain equation for signal flow graph.
[7 marks]Write short note on: Analogue models of mechanical and electrical system.
[7 marks]What does a block diagram represent? Explain it in detail. List its salient characteristics.
[7 marks]Derive the Mathematical modeling of a thermal system.
[7 marks]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, Q =1 Flow rate from 1st tank to 2nd tank, Q = Flow rate from 2nd tank, H = Height21 of liquid in 1st tank, H = Height of liquid in 2nd tank.2
[7 marks]What is Transfer function? Obtain the transfer function of mechanical network shown in Figure.
[7 marks]Explain Translational mechanical and Rotational mechanical systems.
[7 marks]Explain the following : (1) Proportional lag and Controlled lag (2) Linear time invariant and Linear time varying systems
[7 marks]Find the input–output transfer function T=Y/Uof the system by reducing the following block diagram.1
[7 marks]Compare the hydraulic system with the pneumatic system with appropriate example.
[7 marks]Reduce block diagram as shown in Figure and obtain overall transfer function.
[7 marks]Compare and contrast pneumatic system with hydraulic system.
[7 marks]Classify DC motors. Discuss their characteristics. Explain the construction and components of a DC motor.
[7 marks]Write note on "Programmable Logic controller (PLC) with its advantages. Also write its applications
[7 marks]Explain pneumatic nozzle-flapper amplifier with a neat sketch.
[7 marks]