Exhaust Back Pressure of an Engine Running at Idle Should

question 25

Multiple Choice

Exhaust back pressure of an engine running at idle should be ________.

• A) 2.5 PSI
• B) 1.5 in. Hg
• C) less than 1.5 PSI
• D) 2.5 in. Hg

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Definitions:

Hydrogenation

Hydrogenation is a chemical process whereby hydrogen is added to unsaturated bonds in organic compounds, often used to convert liquid oils into solid fats.

Trans Fatty Acids

Types of unsaturated fats that have been chemically altered through hydrogenation, often found in processed foods and linked to various health risks.

LDLs

Low-density lipoproteins, a class of lipoprotein responsible for transporting cholesterol to cells, often referred to as "bad" cholesterol due to its association with arterial plaque buildup.

Large Intestine

The portion of the digestive tract of humans (and other vertebrates) consisting of the cecum, colon, rectum, and anus.