When the load is above _______________ a synchronous motor is found to be more economical?
Correct answer: D. 100 kW
- A. 2 kW
- B. 20 kW
- C. 50 kW
- D. 100 kW
Explanation
Synchronous motors become economically attractive for large loads, commonly above about 100 kW, because their higher cost is offset by improved efficiency and power-factor correction. Below this level, induction motors are usually cheaper and simpler.
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