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System grounding is done so that | |
A. | inductive interference between power and communication circuits can be controlled [Wrong Answer] |
B. | the floating potential on the lower voltage winding for a transformer is brought down to an insignificant value [Wrong Answer] |
C. | the arcing faults to earth would not set up dangerously high voltage on healthy phases [Wrong Answer] |
D. | for all above reasons [Correct Answer] |