The field coils of D.C. generator are usually made of
A) mica
B) copper
C) cast iron
D) carbon
Correct Answer:
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Q1: In the D.C. motor the iron losses
Q2: Laminations of core are generally made of
A)case
Q3: Which of the following could be lamina-proximately
Q4: The armature of D.C. generator is laminated
Q5: The resistance of armature winding depends on
A)length
Q7: The commutator segments are connected to the
Q8: In a commutator
A)copper is harder than mica
B)mica
Q9: In D.C. generators the pole shoes are
Q10: Satisfactory commutation of D.C. machines requires
A)brushes should
Q11: Fleming's right-hand rule regarding direction of induced
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