Engine : Electricity - 520/1386
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| If a magnetic controller relay fails to drop out when the coil voltage is removed from the relay, what is the probable cause? |
| A) welded contacts |
| B) excessive current |
| C) excessive spring tension |
| D) overvoltage |
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| Comments |
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| michelejgilliam - 2025-12-21 13:01:41 Registered (1) |
| Correct answer: A) Welded contacts If the relay does not drop out after coil voltage is removed, the magnetic force is no longer present. The only likely reason it stays engaged is that the contacts have welded together due to arcing or overheating, mechanically holding the relay closed. <a href="https://bubbleshooterfun.de">bubbleshooter</a> |