11. In D.C. generators, current to the external circuit from armature is given through
12. Which of the following could be lamina-proximately the thickness of laminations of a D.C. machine ?
13. Which of the following statement about D.C. generators is false ?
14. In a commutator
15. The commutator segments are connected to the armature conductors by means of
16. Armature reaction of an unsaturated D.C. machine is
17. A cumulatively compounded long shunt generator when operating as a motor would be
18. In case of D.C. machines, mechanical losses are primary function of
19. With a D.C. generator which of the following regulation is preferred ?
20. Armature reaction in a generator results in
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