Engine_2014 : Electricity - 606/2299
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| As shown in the illustration, what are the characteristics of the trouble relay contacts? |
| A) two sets of normally open contacts which close when the trouble relay coil is energized |
| B) two sets of normally closed contacts which close when the trouble relay coil is energized |
| C) two sets of normally open contacts which open when the trouble relay coil is energized |
| D) two sets of normally closed contacts which open when the trouble relay coil is energized |
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