The single phasing relays are used for the protection of_____________?
Correct answer: D. three phase motors
- A. single phase motors only
- B. two phase motors only
- C. two single phase motors running in parallel
- D. three phase motors
Explanation
Single phasing means one phase of a three-phase supply is lost, which can overheat and damage a three-phase motor. A single-phasing relay detects this condition and disconnects the motor.
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