Question 1:
How the hysteresis loss and eddy current loss are reduced in DC machines?
Question 2:
Write the EMF equation of the DC generator.
Question 3:
Why the efficiency of transformer is superior to any other electrical machines?
Question 4:
Describe the situations for maximum efficiency for a transformer.
Question 5:
A 8 pole, 3 phase induction motor is supplied from 50 Hz, ac supply .On full load, the frequency of induced e.m.f in rotor is 2 Hz. Find out the full load slip.