HOLT Electricians Practice Exam 2025 - Free Electrician Certification Practice Questions and Study Guide

Question: 1 / 400

Which motor listed has the highest rating?

25 horsepower synchronous 3-phase

The 25 horsepower synchronous 3-phase motor has the highest rating among the options provided because it has the greatest amount of power output—25 horsepower. Horsepower is a unit of measurement used to quantify the power of motors, and in this case, the synchronous motor's rating exceeds that of the other motors listed. The other options have lower horsepower ratings (20, 15, and 3 respectively), meaning they can produce less power compared to the 25 horsepower motor. Additionally, synchronous motors are often more efficient and can maintain their speed under varying load conditions, making them suitable for applications that require high performance and reliability. Thus, the 25 horsepower synchronous motor is identified as having the highest power rating in this selection.

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20 horsepower 3-phase

15 horsepower 3-phase

3 horsepower 120 volts

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