If brushes of a D.C. generator are moved in order to bring these brushes in magnetic neutral axis, there will be
A) demagnetisation only
B) cross magnetisation as well as magnetisation
C) crossmagnetisation as well as demagnetising
D) cross magnetisation only
Correct Answer:
Verified
Q1: The material for commutator brushes is generally
A)mica
B)copper
C)cast
Q2: The insulating material used between the commutator
Q3: In D.C. generators, the brushes on commutator
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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