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In dc generator, the critical resistance can be decreased by decreasing its speed The main disadvantage of series generators, Output voltage varies as the load varies The effect of armature current on main field flux is armature reaction The e.mf induced in the armature winding is constant with time. By tapping field method, the speed of d.c series motor can be controlled above rated value

In dc generator, the critical resistance can be decreased by decreasing its speed The main disadvantage of series generators, Output voltage varies as the load varies The effect of armature current on main field flux is armature reaction The e.mf induced in the armature winding is constant with time. By tapping field method, the speed of d.c series motor can be controlled above rated value

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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In dc generator, the critical resistance can be decreased by decreasing its speed The main disadvantage of series generators, Output voltage varies as the load varies The effect of armature current on main field flux is armature reaction The e.mf induced in the armature winding is constant with time. By tapping field method, the speed of d.c series motor can be controlled above rated value
Transcribed Image Text:In dc generator, the critical resistance can be decreased by decreasing its speed The main disadvantage of series generators, Output voltage varies as the load varies The effect of armature current on main field flux is armature reaction The e.mf induced in the armature winding is constant with time. By tapping field method, the speed of d.c series motor can be controlled above rated value
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