Define (i) Error (ii) Positive feedback (iii) Positive feedback
[3 marks]Write the types of input with example.
[4 marks]Athermometer exhibiting first order dynamics having a time constant of 5 sec is at a steady state temperature of 25 °C. At time t = 0, the thermometer is placed in a temperature bath at 70 °C. Show that value of response reaches 63.2 % of its ultimate vale when time elapsed is equal to one time constant
[7 marks]Find the Laplace transform of e−tcos2t.
[3 marks]Explain the terms: overshoot, decay ratio, rise time, response time.
[4 marks]Write a short note on various controllers used in process industries.
[7 marks]Derive the transient response of Proportional control for Set point change and for load change.
[7 marks]Write the systematic procedure for determining transfer function of a process.
[3 marks]Explain the control hardware relating to control system
[4 marks]Find the stability of system using routh stability criteria having characteristic equation: 3s4 +10s3 +5s2 +5s+2 = 0
[7 marks]Define first order system. Also mention characteristic of its transfer function.
[3 marks]Differentiate between Air to Close and Air to Open Control Valve.
[4 marks]The characteristic equation: s3 +9s2 +26s +(24+48K ) = 0 Determine the C value of Kfor which the system is stable by routh stability criteria. C
[7 marks]For the case of a servo problem prove that an increase in controller gain will reduce the value of offset.
[3 marks]What is Transportation lag? Derive the transfer function of a system with a transfer lag.
[4 marks]Describe the working of pressure spring thermometer
[7 marks]Derive transfer function of PD-Controller.
[3 marks]Derive the step response of an underdamped second order system.
[4 marks]Describe any instrument for liquid level measurement with neat sketch.1
[7 marks]Explain Zero’s and Pole’s with example.
[3 marks]Explain the importance of block diagram in control system.
[4 marks]Write a short note on McLeod Vacuum gauge.
[7 marks]Write down the limitation of Routh Test.
[3 marks]Differentiate feedback and feed forward control system
[4 marks]With neat sketch explain principle, working and function of Venturi meter.
[7 marks]