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

MCQOPTIONS

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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