Multiple Choice
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
Correct Answer:
Verified
Q3: Equilizer rings are required in case armature
Q4: Magnetic field in a D.C. generator is
Q5: The material for commutator brushes is generally<br>A)mica<br>B)copper<br>C)cast
Q6: Eddy currents are induced in the pole
Q7: Armature reaction of an unsaturated D.C. machine
Q9: A D.C. welding generator has<br>A)lap winding<br>B)wave moving<br>C)duplex
Q10: Two generators A and B have 6-poles
Q11: For a D.C. machines laboratory following type
Q12: The insulating material used between the commutator
Q13: D.C. generators are connected to the busbars