Maximum and average demand (PE exam question)

[gadfly56]

If, as appears clear, the graph is 2-piece linear over that time period, peaks at 75 kW, and passes through (30,50) and (45,50), the average value is exactly 1/2*(50+75). The area of a triangle of a given altitude is 1/2 base * height, regardless of where that top vertex is located over the base.

Cheers, Wayne

Good observation.

 

[wwhitney]

62.5kW is the only possible answer; the exact number is irrelevant.

Certainly correctly answering the multiple choice question does not require an exact answer. I was just pointing out that it's not hard to get an exact answer in this case.

Cheers, Wayne