Which of the following alternatives will be cheaper ?
Correct answer: A. A 100 H.P. AC. three phase motor
- A. A 100 H.P. AC. three phase motor
- B. Four motors of 25 H.P. each
- C. Five motors of 20 H.P. each
- D. Ten motors of 10 H.P. each
Explanation
A single 100 HP three-phase motor is usually cheaper than several motors with the same total rating because it needs fewer frames, bearings, starters, and installation components. Dividing the load among multiple motors raises the overall cost.
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