DC motors are stopped by opening the line switches and not by forcing the handle of the motor starter back to the OFF position. This is due to occurrence of
A. heavy sparking at the first stud of the starting resistance steps.
B. heavy sparking at the brushes.
C. both (a) and (b).
D. none of these.
Answer:A
DC motors are stopped by opening the line switches and not by forcing the handle of the motor starter back to the OFF position. This is due to occurrence of
A. heavy sparking at the first stud of the starting resistance steps. B. heavy sparking at the brushes. C. both (a) and (b). D. none of these.