Control Engineering — Summer 2024

Draw a general block diagram of an automatic control system.

Differentiate open loop and closed loop control systems.

Reduce block diagram as shown in fig. 1 and obtain overall transfer function.

Differentiate a linear time invariant and linear time varying systems.

Compare between signal flow graphs and block diagrams.

Using Mason’s gain formula, find the gain of the system shown in fig. 2.

What are the signal flow graphs ? Define node, transmittance, branch, source node, sink node, path, loop and loop gain with necessary diagrams.

State the advantages of Analogues systems.

Explain in brief force-voltage analogy.

Explain the mathematical modeling of fundamental components of mechanical translational system

Define hydraulic system. State the major components of hydraulic system.

Name the various types of pumps commonly used for hydraulic power purposes. Explain any one pump with necessary diagram.

For the mechanical system shown in fig.3. draw the mechanical network diagram and obtain the differential equations of performance of the system.

Explain in brief various types input test signals used for time response analysis of a control system.

Define delay time and rise time in reference to transient response specifications of second order system using neat sketch.

Define pneumatic control systems. List all major components of this system. Briefly explain the properties of air.

What is modern control theory ?

Compare modern control theory with conventional control theory.

Determine the stability of a closed loop control system with characteristic equation : s5 + s4 + 2s3 + 2s2 + 3s + 5 = 0.

State the advantages and disadvantages of frequency response analysis.

Explain the following terms : i) Resonant peak; ii) Resonant frequency

Define Controller and give classification of it. Explain Two Position Controller with suitable example.

Obtain state-space model for spring-mass-damper system.

Explain pneumatic nozzle-flapper amplifier with a neat sketch.

Explain with neat sketch PID Controller and derive its transfer function.1 Figure No. 1 (Q.1(c)) Figure No. 2 (Q.2(c)) Figure No. 3 (Q.3(c))