Question

tractor propane certification training | knowledge check
what does it mean to purge a cylinder? select all that apply.
air is removed from the cylinder.
propane is removed from the cylinder.
propane vapor is added to the cylinder.
moisture is removed from the cylinder.

Explanation:

Purging a cylinder typically means removing air and moisture to ensure pure gas and prevent issues like corrosion or improper gas - air mixtures. Adding propane vapor is not purging, and removing propane is not the purpose of purging in this context.

Answer:

Air is removed from the cylinder., Moisture is removed from the cylinder.