Wednesday, October 29, 2014

B.E/B.Tech Degree Examinations May / June 2011 Anna University EE52 Electrical Machines - II Question Paper

B.E/B.Tech Degree Examinations May / June 2011

Regulations 2008

Fifth Semester - EEE

EE52 Electrical Machines - II

Electrical and Electronics Engineering

Time : 3 hours Max. Marks : 100

Part-A (10 x 2 = 20 marks)

Answer all Questions

1. What are the effects of Armature reactor?

2. State the condition for parallel operations of Alternator.

3. List any two characteristic features of synchronous motor.

4. What is the synchronous condenser?

5. Why is the Induction motor always runs with the speed less than the synchronous speed?

6. Define slip.

7. What is the need for starters in Induction motor?

8. What are the speed control techniques applicable to squirrel cage induction motor?

9. Define double field revolving theory.

10. Write down any two applications of single phase induction motors

Part-B (5 x 16 = 80)

11. a) i. Derive the emf equation of Alternator. (8)

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