Q.1 Obtain the unit step response for the following in Simulink. Where possible, qualitatively justify the shape of the transient response

Q.2 The process is described by the following transfer function

Q.4 An electronic PID temperature controller is at steady state with an output of 12 mA. The set point equals the nominal process temperature initially. At t=0, the set point is increased at the rate of 0.5 mA/min. If the current settings are K₂= 2, t=1.5 min, Tp=0.5 min. (a) Generate the controller response in Simulink. (b) Repeat part (a) for a PI controller

A control system has the following transfer functions: Gc = Kc, GvGp = 1/(s+1) (0.5s+1)2

Q.6 Consider the FODT model with K = 2, time constant = 5, time delay = 1. Compare the PID controller settings obtained from Ziegler-Nicholas and Tyreus- Luyben tuning relations. Simulate and briefly discuss the closed-loop responses for a unit step change in the set point.

Two liquid storage tanks are shown in Figure Q2. For System I, the valve acts with a resistance R = 580 s m-2, so that the relation between the flow (F)and liquid level in the tank (h) is given by F = hlR. For System II, a pump is used instead of the valve, meaning that variations in liquid level do not affect the exit flow rate. The diameter of each tank is the same, D = 1.1 m. For each system determine the following information and show all your workings: (a) Process gain (Kp) and time constant (7). (b) New steady-state liquid levels in both System I and System II, if the inlet flow rate suddenly changes from 3.0x10-3 m³ s-1 to4.5x10-3 m3 s-1. The initial steady-state level in both systems is 1.8 m. (c) If each tank is 2.4 m tall, which tank overflows first? Calculate when this will happen.

A single-tank process has been operating with an inlet flow rate equal to29.4 m3 min-1. The operator increases the flow rate suddenly by 10%,resulting in a level change in the tank as recorded in Table Q3. Assuming that the liquid-level dynamics follow a first-order model, determine: (a) The Pl controller settings using the Ziegler-Nichols tuning relations. (b) The process gain and time constant using Sundaresan and Krishnaswamy's method. Compare these values against the values from the graphical method.

Liquids are agitated for a number of purposes, depending on the objectives of the process. Name at least four.

What are the benefits of rotary compressors when compared to reciprocating compressors?

a) What is lonization Energy? b) Why does the first ionization energy increase from left to right in a period and from bottom to top in a group?

List the typical utilities needed in Utility Flow Diagrams.

Define the term "Programmable Logic Controllers" in Spray Dryers.

Discuss the different modes of heat exchange in a typical fired heater shown below.

Differentiate single effect and multiple effect Mechanical vapor recompression (MVR).

Which flow measuring meter is used in waste water treatment plants? Why?

Write short note on Liquid-propellant rockets.Give few real-time applications.

A proportional controller operated pneumatically is used to control temperature within the range of 65°F to 100°F.The measured temperature goes for 71°F to 78°F with the set point held constant when he controller is adjusted so that the output pressure goes from 3 psi (valve fully open) to 15psi (valve fully closed). Find the Proportional band.

Write the advantages and disadvantages of Electromagnetic flow meters.

What is called physical change in the context of Chemical kinetics?Give two examples of your own.