General Studies · Automobile Engineering
When does a vacuum booster in an automotive braking system create/store a vacuum?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When the engine is off, and the brake is applied
- 2When the engine is running, and the brake is not applied✓
- 3When the fuel level is low
- 4When the brake is applied while the engine is off
Correct answer
When the engine is running, and the brake is not applied
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