The following constitute short-circuit in the armature winding.
A) Insulation failure between two com-mutator bars
B) Insulation failure between two turns of a coil
C) Two of more turns of the same coil getting grounded
D) All of the above
Correct Answer:
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Q15: The purpose of providing dummy coils in
Q16: If a D.C. generator fails to build
Q17: Flashing the field of D.C. generator means
A)neutralising
Q18: The e.m.f. induced in the armature of
Q19: In a D.C. generator the critical resistance
Q20: To achieve sparkless commutation brushes of a
Q21: Armature coil is short circuited by brushes
Q22: A cumulatively compounded long shunt generator when
Q23: To avoid formation of grooves in the
Q25: The rapid wear of brushes takes place
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