#### Problem Statement: Electrical Engineering Professional Subjects

**Electrical Machines: AC Motors Problem Solving**

A 40-HP, 230-V., 8-pole, 25 Hz three-phase induction motor is running at 355 rpm at rated load. The torque lost by friction is 24 N-m. If the stator losses amount to 1,000 W., calculate the efficiency of the motor at this load.

#### Problem Answer:

The efficiency of the motor at this load is equal to **94.03%**.

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Hello, did we assume “No Rotor Copper Losses” or is 892.21 Watts the total Rotor power losses?