An Automobile Engine Operates with an Overall Efficiency of 12

question 3

Multiple Choice

An automobile engine operates with an overall efficiency of 12%. How much energy is delivered as waste heat (in gallons of gasoline) for each 10 gallons of fuel burned?

• A) 1.2
• B) 8.8
• C) 6.5
• D) 4.7
• E) 7.5

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Definitions:

Junction

A point where two or more roads or electrical circuits meet or cross.

Pressure Differential Valve

A valve used in hydraulic systems to maintain a constant pressure difference between two points, often used in braking systems.

Hygroscopic

A characteristic of a substance to attract and hold water molecules from the surrounding environment.

Static Friction

The frictional force that prevents two surfaces from sliding past each other when they are initially at rest.