An Engineer Uses a River (Which Averages 4 $^{\circ}$ C)to Cool His Electrical Plant Which Heats Water with a Cool

question 46

Multiple Choice

An engineer uses a river (which averages 4 $^{\circ}$ C) to cool his electrical plant which heats water with a boiler operating at 750 $^{\circ}$ C .What's the maximal performance (in terms of efficiency) theoretically possible for this electrical plant?

• A) 64%
• B) 36%
• C) 27%
• D) 73%

---

Definitions:

Body Mass Index

A numerical calculation using a person's weight and height to determine their overall body fat and health risk categories.

Overweight

A condition where an individual has more body weight than is considered healthy for their height, often measured by body mass index (BMI).

85th Percentile

A statistical value where 85 percent of observations fall below this point, often used in growth charts to indicate levels above which might be considered overweight or at risk.

Body Fat

The portion of the human body composed of fat tissue, essential for energy storage, protection of internal organs, and thermal insulation.