Saturday, January 23, 2016

Fundamental questions about electrical machines

(1)what is requrement of commutator motors?
(2) what is meaning of unsaturated field in dc motor?
(3)what happens when field winding is reversed in dc series motor?
(4)why we draw occ for dc generator?
(5) why transformer efficiency is very high compare to motors and generators?
(6) why we draw equivalant circuit for electrical machines?

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