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A dc series motor is used for an overhauling load. It can work stably if | |
A. | the armature is shunted by a resistor. [Correct Answer] |
B. | the field winding is reversed. [Wrong Answer] |
C. | a resistor is put in series with the machine. [Wrong Answer] |
D. | a divertor is put across the field. [Wrong Answer] |