problem 1:
How the hysteresis loss and eddy current loss are reduced in DC machines?
problem 2:
prepare the EMF equation of the DC generator.
problem 3:
Why the efficiency of transformer is superior to any other electrical machines?
problem 4:
Describe the situations for maximum efficiency for a transformer.
problem 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.