Gas Fitter Practice · Question
What is the purpose of a thermocouple in a gas appliance with a standing pilot light?
A thermocouple generates a small electrical current when heated by the pilot flame, which then holds open the pilot safety valve, allowing gas to flow to the ma
Start free practice for Gas Fitter Practice
200 questions · no signup required · 40 free questions per day
Question: What is the purpose of a thermocouple in a gas appliance with a standing pilot light?
Answer options:
- To regulate the gas pressure to the pilot light
- To ignite the main burner when the thermostat calls for heat ✅ To prove the presence of a pilot flame and hold open the main gas valve
- To measure the temperature of the flue gases
Correct answer: To prove the presence of a pilot flame and hold open the main gas valve
Explanation: A thermocouple generates a small electrical current when heated by the pilot flame, which then holds open the pilot safety valve, allowing gas to flow to the main burner.
Start free practice for Gas Fitter Practice
200 questions · no signup required · 40 free questions per day
More about Gas Fitter Practice
Related Questions
- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
- Which of the following is the primary purpose of a drip leg (sediment trap) in a gas piping system?
- What is the minimum air-to-gas ratio required for complete combustion of natural gas?
More for Gas Fitter Practice candidates
Practice tests
Question explanations
- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Gas Fitter Practice Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.