Question

when the engine is running and the brakes are released, what is the term used for the condition inside the vacuum booster? a) pressurized b) vacuum - applied c) vacuum - suspended d) pressure - suspended

Explanation:

When the engine is running and the brakes are released, the vacuum booster has vacuum applied to it. This is because the engine's operation creates a vacuum that is utilized by the vacuum - booster system. Pressurized would imply a high - pressure state which is not the case here when brakes are released. Vacuum - suspended and pressure - suspended are not the correct technical terms for this normal operating condition of the vacuum booster when brakes are released.

Answer:

B) Vacuum - applied