Recreational Vehicle (RV) Technician Practice Test

Which of the following units measures the pressure in a propane container?

1. Pound per square inch

2. Inches water column

3. Both A and B

4. None of the above

The correct answer is: Both A and B

The measurement of pressure in a propane container can be done using multiple units, and both pounds per square inch (psi) and inches of water column (in WC) are commonly used in different contexts. Pounds per square inch is a standard unit used to measure pressure in many industries, including propane gas systems. It provides a clear measure of how much force is exerted over a certain area, making it useful for understanding the operating pressures in various systems. Inches of water column is another unit that measures pressure, particularly in lower pressure applications, like those typically found with propane systems. It can provide more precise readings in these scenarios, especially when dealing with appliances that operate at lower pressures. Using both units allows technicians to understand and work with propane systems more effectively, as different systems may specify pressure in one unit or the other. Therefore, since both units are applicable for measuring pressure in a propane container, the correct answer is that both pound per square inch and inches of water column are valid measurements.