Answer / Tarun Veer Singh

When a three-phase motor is supplied with two phases for a short duration, it will run but not at full speed due to the lack of one phase. When the third phase is reintroduced, the motor may briefly stop and then restart in reverse direction due to the difference in the magnetic field created by the phases. This direction reversal can be explained by Lenz's law, which states that the induced current in a magnetic circuit will flow so as to oppose the change causing it.

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