will refuse to start
will overheat in spots
will not come upto speed
will fail to pull into step
Answer is Right!
Answer is Wrong!
The correct answer is: A. will refuse to start
A three-phase synchronous motor has three windings that are evenly spaced around the stator. When these windings are energized with three-phase power, they create a rotating magnetic field. This magnetic field induces a current in the rotor, which causes the rotor to turn in the same direction as the magnetic field.
If one of the phases is short-circuited, the magnetic field will be distorted. This will cause the rotor to lose power and stop turning.
The other options are incorrect because:
- Option B: The motor will not overheat in spots. The motor will overheat as a whole, but this is not the reason why it will refuse to start.
- Option C: The motor will not come up to speed. The motor 512">
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