DC Motors MCQs
Practice free DC Motors multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 313 questions — no login required.
Question 37easy
In a dc machine without interpoles, to get improved commutation, the brush shift angle must be
Question 38easy
A dc mache is provided with both in interpole winding (IPW) and compensating winding (CPM). With respect to the armature in parallel
Question 39easy
In a de generator, cross-magnetizing ampere tur per pole ATns equalsc
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Question 40easy
In a de g enerator, the number of ampere-windings is equal to turns per pole Ne for compensating
Question 41easy
In a tic machine if P is the number of Poles, N is the armature speed in rpm, Will be then the frequency of magnetic reversal PN
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Question 45easy
The emf induced. n the armature of a de machine is proportional to