G3 Quiz 28

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Question 1 of 10

1. Question
124)A luminous flame is caused by:
- A. premixing air and fuel prior to combustion.
- B. not premixing air and fuel prior to combustion.
- C. a low ignition temperature.
- D. the presence of carbon monoxide
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Question 2 of 10

2. Question
125)A Bunsen flame is caused by:
- A. premixing air and fuel prior to combustion.
- B. not premixing air and fuel prior to combustion.
- C. a low ignition temperature.
- D. the presence of carbon monoxide
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Question 3 of 10

3. Question
126)Natural gas and propane are composed mainly of:
- A. carbon and nitrogen.
- B. carbon and hydrogen.
- C. carbon monoxide and nitrogen.
- D. carbon dioxide and hydrogen
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Question 4 of 10

4. Question
127)If a natural gas flame is adjusted to produce more than 10% carbon dioxide:
- A. carbon monoxide may be produced.
- B. combustion efficiency will decrease.
- C. the flame will be very noisy and will lift off of the burner.
- D. there will be little overall effect.
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Question 5 of 10

5. Question
128)At 60 F (15.5°C) a pound of propane produces how many cubic feet of gas?
- A. 2.12
- B. 4.30
- C. 8.50
- D. 10.10
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Question 6 of 10

6. Question
129)Carbon monoxide is:
- A. an inert gas which is heavier than air.
- B. an inert gas which is lighter than air.
- C. a toxic gas which is combustible.
- D. a toxic gas which is non-combustible.
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Question 7 of 10

7. Question
130)By definition, the specific gravity of a gas (vapour) is:
- A. the weight of the gas as compared to the weight of air.
- B. the weight of the gas as compared to the weight of an equal volume of air.
- C. the volume of the gas compared to the equal weight of an equal volume of air.
- D. the volume of the gas as compared to the weight of air.
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Question 8 of 10

8. Question
131)A “bill of materials” is a:
- A. list sent by the manufacturer as a check list of the materials delivered to the site.
- B. purchase order copy indicating the materials which were ordered.
- C. list indicating the materials required to complete an installation.
- D. list of all the materials used manufacturing the equipment.
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Question 9 of 10

9. Question
132)Mechanical drawings are used to:
- A. give the building address, show the equipment location, piping layout, panel locations, duct sizing and duct layout. structures, piping layout, and show equipment location
- C. give the building address, indicate the building size, show its elevations, list the mechanical equipment, and show its location, show all permits.
- D. give the building address, show the owner's name, installer's name, permit numbers, the equipment list and the warranty.
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Question 10 of 10

10. Question
133)What process takes place at the heat exchanger?
- B. Return air is heated.
- C. The combustion process takes place.
- D. The flue gases are stored
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G3 Quiz 28

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