Question

Any questions about electrical machines?​

Answer 1

Answer:

Explanation:

1) What is a single phase Autotransformer?

2) What are the advantages of Autotransformer?

3) What are the disadvantages of Autotransformer?

4) What are the applications of Autotransformers?

5) What is the general system requirement of Alternator?

6) What are the advantages of Stationary Armature and Rotating Field System?

7) What is meant by Stator? What is meant by Rotor?

8) What are the Advantages of the three-phase motor over Single phase motor?

9) What is the basic principle of operation of Alternators/DC generators?

10) How to minimize the Eddy Current Losses?

Answer 2

Answer:

1] Why is the efficiency of a three-phase Induction Motor is less than that of a three-phase Transformer?

[2] Why the air gap between the pole pieces and the armature is kept very small?

[3] Why does curving the pole faces in a DC machines contributes to a smoother DC output voltage from it?