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