Duty factor is a ______ and is therefore _______.

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Multiple Choice

Duty factor is a ______ and is therefore _______.

Explanation:
Duty factor is a ratio of the time the system is on to the total cycle time. Because it’s a ratio of two times, the units cancel, so the quantity is dimensionless. In practice, we often express this ratio as a percentage, which simply means the same dimensionless value multiplied by 100. So describing it as a percentage and, by nature, dimensionless fits perfectly: you can read it as 0–100% (or 0–1 as a fraction), but the underlying measure is a unitless proportion.

Duty factor is a ratio of the time the system is on to the total cycle time. Because it’s a ratio of two times, the units cancel, so the quantity is dimensionless. In practice, we often express this ratio as a percentage, which simply means the same dimensionless value multiplied by 100. So describing it as a percentage and, by nature, dimensionless fits perfectly: you can read it as 0–100% (or 0–1 as a fraction), but the underlying measure is a unitless proportion.

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