### IC8451 - Control Systems - Unit-1 Two marks

__Subject Name:__ Control Systems

__Subject Name:__

__Subject Code:__ IC8451

__Subject Code:__

## B.E. EEE/EIE/ICE Dept - semester 04

Anna University Regulation 2017 B.E. EEE/EIE/ICE Dept 4th semester IC8451(

**Control Systems**) 2 marks for**1st unit**is provided below.**IC8451**all units**2 marks**,**Control Systems all units notes**& syllabus are listed down for students to utilize it for scoring maximum marks with our study materials.## 1.Name the two types of feedback employed in control systems.

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## 2.What are the different types of feedback control systems?

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## 3.What is meant by linear time invariant system ?

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## 4.Define open loop and closed loop system.

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## 5.Differentiate between positional servomechanism and rate servomechanism.

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## 6.What is an error detector in control system ?

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## 7.What are the basic components of an automatic control systems ?

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## 8.Write a note on servoamplifier.

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## 9.Give practical examples of open loop control systems.

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## 10.Give practical examples of closed loop control systems.

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## 11.What are the requirements of a good control system.

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## 12.Why negative feedback is preferred in control systems ? (or) List the characteristics of negative feedback in control system.

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## 13.Name three functional components used in control systems. Describe the role played by each.

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## 14.Differentiate between regulator and servomechanism.

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## 15.What is multivariable control system ?

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## 16.What is meant by robust control ?

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## 17.What is the force voltage analogy of mechanical spring ?

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## 18.What is electrical analogous to gear ?

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## 19.What are the basic elements used for modeling mechanical rotational system ?

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## 20.Write the analogous electrical elements in force current analogy for the elements of translational mechanical system.

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## 21.Write the analogous electrical elements in force voltage analogy for the elements of translational mechanical system.

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## 22.What do you understand by an analogous system and how it is useful in practice ?

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## 23.What is the difference between a.c. servo motor and 2 phase induction motor ?

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## 24.State the basic elements for modeling in translational and rotational systems.

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## 25.What is electrical zero position of synchro transmitter ?

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## 26.What are the differences between a synchro transmitter and synchro control transformer?

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## 27.What is block diagram ?

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## 28.Define open loop control system. (or) Define open loop system.

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## 29.Define closed loop control system. (or) Define closed loop system.

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## 30.Distinguish between open loop system and closed loop system. (or) Distinguish between open loop control system and closed loop conrol system.

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## 31. Compare the open loop system with closed loop system. (or) Compare the open loop control system with closed loop control system.

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## 32.Why is negative feedback invariably preferred in closed loop system?

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## 33.What are the characteristics of negative feedback?

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## 34.What is the effect of positive feedback on stability?

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## 35.Define transfer function. (or) Define transfer function of a system.

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## 36.State the advantages of open loop system (or) State the advantages of open loop control system

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## 37.State the Disadvantages of open loop system (or) State the Disadvantages of open loop control system

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## 38.State the advantages of closed loop system (or) State the advantages of closed loop control system

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## 39.State the Disadvantages of closed loop system (or) State the Disadvantages of closed loop control system

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## 40.Write any two advantages of block diagram representation. (or) List the advantages of block diagram representation.

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## 41.What are the basic components of block diagram?

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## 42.Define your feedback loop and self loop related to a signal flow graph.

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## 43.State any two advantages of signal flow graph.

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## 44.What is Signal flow graph?

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## 45.Define non-touching loops.

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