71

20

8)
0)

8)

0)

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Also calculate the turns ratio of the transformer.

MODULE 6
Answer any one full question, each carries 10 marks.
Why a single phase induction motor is not self starting? (4)

How can we make a single phase induction motor self starting? Name the different (6)

types of single phase motors available based on starting methods?

8
A 3-0 4 pole induction motor is supplied from 39 50Hz ac supply. Find (8)
(i) synchronous speed ⋅
(ii) rotor speed when slip is 4%
(iii) the rotor frequency when runs at 600r.p.m.
Classify induction motor according to its rotor construction (2)

3200

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