Induction Motor MCQ Part 10

MCQ#1

A 30 HP, 6 pole, 60 Hz slip ring induction motor runs at 940 RPM at full load. The mechanical losses are around 2000 W, while the copper losses in short-circuiting gear are 200 W. The total mechanical output of the motor is:

  1. 22380 W
  2. 24580 W
  3. 48750 W
  4. 52500 W

Correct answer: 2. 24580 W

Output in watts = 30 * 746 = 22380 W

Total mechanical output = 22380 W + 200 W + 2000 W = 24580 W

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