A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor_______________?
Correct answer: A. will continue running burning its one phase
- A. will continue running burning its one phase
- B. will continue running burning its two phases
- C. will stop and carry heavy current causing permanent damage to its winding
- D. will continue running without any harm to the winding
Explanation
A lightly or normally loaded delta motor may continue rotating after one fuse opens, but the remaining phase currents become unequal. The directly energized phase can overheat and burn, so continued operation is unsafe.
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