Understanding Pressure Measurement

What is an equivalent unit of pressure for a compound gauge reading of 10 inches of mercury(Hg)?

A) 10 pounds absolute B) Two pound gauge C) One atmosphere D) 29.92 Hg

Final answer: Option D

Equivalent Unit of Pressure for 10 inches of Mercury(Hg)

A compound gauge with a reading of 10 inches of mercury (Hg) is equivalent to 29.92 Hg.

When a compound gauge has a reading of 10 inches of mercury (Hg), it is equivalent to 29.92 Hg. This means that the pressure measurement indicated by the compound gauge is equal to 29.92 inches of mercury on a standard gauge.

Mercury is denser than water, which is why it is commonly used in barometers to measure pressure. The standard atmospheric pressure at sea level is equivalent to a column of mercury that is about 29.92 inches high.

Therefore, when you see a reading of 10 inches of mercury on a compound gauge, you can understand that it is indicating a pressure equivalent to 29.92 inches of mercury on a standard gauge.

Understanding pressure measurement and units is essential in various fields such as engineering, meteorology, and physics. It helps in accurately assessing and predicting changes in pressure levels in different systems.