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G3 Quiz 29

G3 Quiz 29

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Question 1 of 10

1. Question
134)Boilers transfer heat to water through:
- A. conduction.
- B. radiation.
- C. convection.
- D. a latent process.
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Question 2 of 10

2. Question
135)Air which is mixed with fuel in a burner prior to combustion is:
- A. primary air.
- B. secondary air.
- C. excess air.
- D. theoretical air.
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Question 3 of 10

3. Question
136)An orifice for a propane appliance with the same input as a natural gas appliance is:
- A. the same size as the natural gas orifice.
- B. smaller than the natural gas orifice.
- C. larger than the natural gas orifice.
- D. interchangeable with the natural gas orifice.
Correct

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Question 4 of 10

4. Question
137)Spillage of flue gases at the appliance draft diverter is an indication of:
- A. an updraft condition in the appliance venting system.
- B. under firing.
- C. normal operation.
- D. a restriction in the venting system.
Correct

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Question 5 of 10

5. Question
138)A yellow flame at an atmospheric burner could be the result of:
- A. low gas pressure.
- B. insufficient primary air.
- C. pilot outage.
- D. excessive primary air.
Correct

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Question 6 of 10

6. Question
139)No one may initially activate a 300,000 Btuh input appliance connected to a piping system:
- A. unless the installation is inspected by a G.1 technician or higher.
- B. unless the installation is inspected by a G.2 technician or higher.
- C. unless the installation is inspected by a G.3 technician or higher.
- D. unless the installation is inspected by a GP technician or higher.
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Question 7 of 10

7. Question
140)An indication of excessive primary air is a:
- A. quenched flame.
- B. lifting flame.
- C. luminous flame.
- D. yellow flame.
Correct

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Question 8 of 10

8. Question
141)A draft hood will:
- A. eliminate back drafts coming down a chimney.
- B. eliminate negative pressure in a building.
- C. prevent positive pressure in a building.
- D. prevent down a draft from entering the appliance.
Correct

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Question 9 of 10

9. Question
142)The purpose of a burner in a forced air gas furnace is to:
- A. ignite the gas.
- B. mix the air and gas.
- C. heat the combustion air so that it is lighter to allow it to flow out the exhaust
- D. to direct the gas into the heat exchanger so that it can be mixed with air and ignited
Correct

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Question 10 of 10

10. Question
143)The configuration of a “Hi Boy” forced air gas furnace has:
- A. supply air exiting at the top and return air entering at the top.
- B. return air entering at the top and supply air exiting at the bottom.
- C. supply air entering at the bottom and return air exiting at the top.
- D. supply air exiting at the top and return air entering at the bottom.
Correct

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