TOP 130+ D.C. GENERATORS Multiple choice Questions Download Free [PDF]

D.C. GENERATORS Multiple choice Questions:

1. Lamination’s of core are generally made of
(a) case iron
(b) carbon
(c) silicon steel
(d) stainless steel
Ans: c

2 Which of the following could be lamina-proximately the thickness of lamination’s of a D.C. machine ?
(a) 0.005 mm
(b) 0.05 mm
(c) 0.5 m
(d) 5 m
Ans: c

3. The armature of D.C. generator is laminated to
(a) reduce the bulk
(b) provide the bulk
(c) insulate the core
(d) reduce eddy current loss
Ans:d

4. The resistance of armature winding depends on
(a) length of conductor
(b) cross-sectional area of the conductor
(c) number of conductors
(d) all of the above
Ans: d

5. The field coils of D.C. generator are usually made of
(a) mica
(b) copper
(c) cast iron
(d) carbon
Ans: b

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