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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q536 - Electrical, Electronic, & Control Engineering
190. Assuming that the 3-phase power source has a phase sequence of A-B-C and that the motor is connected as shown in figure «A», if the motor has a clockwise (CW) rotation, what statement is true concerning the motors connected as shown in the other figures
Interchanging two leads reverses motor rotation, while a cyclic permutation of all three leaves the rotation unchanged; therefore, motors B and D rotate counterclockwise, and motor C rotates clockwise.
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