Recreational Vehicle (RV) Technician Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Get ready for the RV Technician Exam. Study with flashcards and multiple-choice questions. Each query comes with hints and explanations. Prepare for success!

Practice this question and more.

What is the required percentage of vapor in an air-gas mixture for propane to ignite?

1.0 and 4.5
2.15 and 9.6
3.0 and 10.0
5.5 and 8.0

The correct answer is: 2.15 and 9.6

The required percentage of vapor in an air-gas mixture for propane to ignite falls within the range of 2.15% to 9.6%. This percentage represents the lower and upper flammability limits for propane in air, indicating that ignition can occur when the concentration of propane vapor is within this specific range. Understanding these limits is essential for safety protocols when working with propane in RV applications. If the concentration is below the lower limit, the mixture is too lean to ignite, whereas if it exceeds the upper limit, the mixture is too rich, which also prevents ignition. Propane's properties as a fuel make it effective and widely used in RVs for appliances that depend on combustion, such as stoves, water heaters, and furnaces. Knowledge of these ignition limits aids in ensuring that propane systems are safe and effective, reducing the risk of fires or explosions in recreational vehicles.