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Maximum Demand / Connected Load

In a power system, the demand factor is the ratio of the:
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Answer & Explanation
Correct AnswerA. maximum demand to total connected load

Quick Explanation

Demand factor compares the maximum demand actually imposed by an installation with the total connected load. Because not all connected equipment is normally at full load simultaneously, demand factor is usually less than or equal to one.

Formula / Key Relation

Demand factor = Maximum demand / Connected load
Maximum Demand / Connected Load explanatory diagram

Detailed Explanation

Correct Answer

A — maximum demand to total connected load

Explanation

Demand factor compares the maximum demand actually imposed by an installation with the total connected load. Because not all connected equipment is normally at full load simultaneously, demand factor is usually less than or equal to one.

Key Concept

Maximum Demand / Connected Load

Formula

Demand factor = Maximum demand / Connected load

Exam Point

Demand factor ≤ 1.

Quick Trick

Demand factor ≤ 1.

Exam Tip

Demand factor ≤ 1.

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