A Vacuum Gauge Is Being Used to Check for a Restricted

question 28

Multiple Choice

A vacuum gauge is being used to check for a restricted exhaust system. The vacuum at idle is 18 in. Hg. Which of these results indicates a restriction?

• A) Vacuum at 2,500 RPM is 22 in. Hg.
• B) Vacuum at 2,500 RPM is 19 in. Hg.
• C) Vacuum at 2,500 RPM is 9 in. Hg.
• D) Not enough information to diagnose

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Definitions:

Butanoic Acid

A carboxylic acid with the formula C4H8O2, known for its unpleasant odor, found naturally in plant and animal fats.

2-Pentanone

A five-carbon ketone with the formula CH3COCH2CH2CH3, used as a solvent in various industrial applications.

Thionyl Chloride

A reagent used in organic synthesis for transforming carboxylic acids into acyl chlorides or converting alcohols into alkyl chlorides.

2-Phenylethanol

An organic compound with a floral scent, commonly used in perfumery and flavoring, representing an alcohol with a phenyl group attached to the second carbon.