Electrical Engineering · Switchgear and Protection
A device that opens or closes an auxiliary circuit upon reaching a predetermined condition in the primary circuit is called a/an _______.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Electromagnetic/Thermal Relay✓
- 2DC contactor
- 3Timer
- 4AC contactor
Correct answer
Electromagnetic/Thermal Relay
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