The direction of rotation of a 3 - Φ induction motor is clockwise when it is supplied with 3 - Φ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be

• A.  B - C - A.
• B.  B - C - A or C - A - B.
• C.  C - A - B.
• D.   A - C - B.

Answer: (D)