Open circuited armature coil of a D.C. machine is – McqOptions

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1.	Open circuited armature coil of a D.C. machine is
A.	Identified by the scarring of the commutator segment to which open circuited coil is connected
B.	Indicated by a spark completely around the commutator
C.	Both (A) and (B)
D.	None of the above
Answer» D. None of the above

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