Gas Technician G2 Exam Prep | Questions With 100% Correct Answers | Verified | Latest Update 2024

What is the minimum pressure required for a Gas Pressure Switch to be installed on a burner system? a. 2 psig b. 2.5 psig c. 0.5 psig d. 5 psig {Ans: }What level of relative humidity can be considered as a comfortable range? Select one: a. 40% b. 25% c. 60% d. 55% {Ans: 40%}When doing a combustion analysis on a propane fired appliance, the CO2 reading of the flue gases should be? a. 5% b. 8% c. 11% d. 9% {Ans: 8%}If a pool filter becomes plugged, what device will de-energize the pool heater? a. a High limit b. Flow switch c. Aquastat d. Pressure switch {Ans: Flow switch}What is the main cause for a blown fuse? a. excessive impedance b. excessive voltage c. excessive amperage d. excessive resistance {Ans: excessive amperage}If a gas valve on a furnace is humming, the probable cause would be? a. Low secondary voltage the transformer needs to be replaced b. Supply voltage is too low c. High secondary voltage the transformer needs to be replaced d. Supply voltage is too high {Ans: Supply voltage is too low}An oil burning appliance may be common vented with a gas