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Supply Chain Automation Equipment Maintenance Practice Test

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Rotary power = (torque x speed) / constant. What is the power with a torque of 10 N and a speed of 100 RPM using the constant of 9.55?
Correct Answer:
104.70
Explanation:
The key idea is converting rotational speed from revolutions per minute to radians per second and then multiplying by torque to get power. The constant 9.55 is an approximate way to do that conversion, since P = τ × ω and ω = 2π × RPM / 60, so P ≈ (τ × RPM) / 9.55. With τ = 10 N·m and RPM = 100, the calculation is (10 × 100) / 9.55 ≈ 104.7 watts. You can also confirm using the direct ω method: ω = 2π × 100 / 60 ≈ 10.472 rad/s, and P = τ × ω = 10 × 10.472 ≈ 104.72 watts. Both paths give about 104.70 W.

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