McqMate
| Q. |
Overheating of relay contacts or contact born out is due to |
| A. | slow making and breaking of load circuit contacts |
| B. | foreign matter on the contact surface |
| C. | too low contact pressure |
| D. | all of the above |
| Answer» D. all of the above | |
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Testing and Commissioning of Electrical Equipment’sNo comments yet