Electrical Machines
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

 B - C - A.
  A - C - B.
 C - A - B.
 B - C - A or C - A - B.

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Electrical Machines
With the increase in speed of a DC motor

 back emf increases but line current falls.
 both back emf as well as line current increase.
 back emf falls and line current increases.
 both back emf as well as line current fall.

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