Direct Current Machine Objective Questions and Answers

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Commutator: the commutator is of cylindrical in shape and is made up of wedge-shaped high conductivity hard drawn copper segments These segments are insulated

These slots house the armature winding Large sized machines employ a spider on which the laminations are stacked in segments End plates are The primary function of a commutator is to supply electrical current to the armature winding Brushes The brushes of a DC motor are made with graphite and

no deposit slot sites dc-machines-questions Which of the following dc generators will have negligible terminal voltage on no load? What are slot wedges in a dc machine made of? The Core of DC machine is made of ferromagnetic material So, the residual magnetism exists after magnetization In ferromagnetic materials, the