INSTRUMENTATION (COMBUSTION)
PROCESS FINAL EXAM REVIEW
QUESTIONS & VERIFIED CORRECT
ANSWERS
Or more above what you measured outside is the most common action level in the U.S.
by local Authorities or Jurisdiction for further testing - Correct Answer ✔✔ 9 ppm
Why is Carbon monoxide production undesirable in furnace operation? - Correct
Answer ✔✔ Carbon Monoxide can cause illness
How do water and carbon dioxide relate to combustion? - Correct Answer ✔✔ Both are
stable and safe products of combustion
What does the term U.E.L. mean? - Correct Answer ✔✔ Upper Explosive Limit
What Category is a furnace up to and including 80% furnaces? - Correct Answer ✔✔
Category 1
Once a technician works on a system, what else should they do? - Correct Answer ✔✔
Check for gas leaks
The high boiling points or propane and butane make it possible to store them in liquid
form. - Correct Answer ✔✔ True
_________ air is used to ensure complete combustion after combustion has started -
Correct Answer ✔✔ Secondary Air
What category is a condensing gas furnace? - Correct Answer ✔✔ Category 4
Air that is mixed with the fuel before is it ignited is referred to as - Correct Answer ✔✔
Primary Air
The heating value of butane is: - Correct Answer ✔✔ 3200 BTU per cubic foot
When comparing gas with air, they both must - Correct Answer ✔✔ Be at the same
temperature and pressure
One BTU is the heat required to raise one pound of water: - Correct Answer ✔✔ One
degree Fahrenheit
PROCESS FINAL EXAM REVIEW
QUESTIONS & VERIFIED CORRECT
ANSWERS
Or more above what you measured outside is the most common action level in the U.S.
by local Authorities or Jurisdiction for further testing - Correct Answer ✔✔ 9 ppm
Why is Carbon monoxide production undesirable in furnace operation? - Correct
Answer ✔✔ Carbon Monoxide can cause illness
How do water and carbon dioxide relate to combustion? - Correct Answer ✔✔ Both are
stable and safe products of combustion
What does the term U.E.L. mean? - Correct Answer ✔✔ Upper Explosive Limit
What Category is a furnace up to and including 80% furnaces? - Correct Answer ✔✔
Category 1
Once a technician works on a system, what else should they do? - Correct Answer ✔✔
Check for gas leaks
The high boiling points or propane and butane make it possible to store them in liquid
form. - Correct Answer ✔✔ True
_________ air is used to ensure complete combustion after combustion has started -
Correct Answer ✔✔ Secondary Air
What category is a condensing gas furnace? - Correct Answer ✔✔ Category 4
Air that is mixed with the fuel before is it ignited is referred to as - Correct Answer ✔✔
Primary Air
The heating value of butane is: - Correct Answer ✔✔ 3200 BTU per cubic foot
When comparing gas with air, they both must - Correct Answer ✔✔ Be at the same
temperature and pressure
One BTU is the heat required to raise one pound of water: - Correct Answer ✔✔ One
degree Fahrenheit
