The insulating material used between the commutator segments is normally
A) graphite
B) paper
C) mica
D) insulating varnish
Correct Answer:
Verified
Q1: The material for commutator brushes is generally
A)mica
B)copper
C)cast
Q3: In D.C. generators, the brushes on commutator
Q4: If brushes of a D.C. generator are
Q5: Armature reaction of an unsaturated D.C. machine
Q6: D.C. generators are connected to the busbars
Q7: Eddy currents are induced in the pole
Q8: Equilizer rings are required in case armature
Q9: Welding generator will have
A)lap winding
B)wave winding
C)delta winding
D)duplex
Q10: In case of D.C. machine winding, number
Q11: For a D.C. machines laboratory following type
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