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Gas Furnace Heating Practice Exam1
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Question 1 of 15
1. Question
1 pointsLPG has a specific gravity of ______:
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Question 2 of 15
2. Question
1 pointsGas burners approved by the _______should be used in a heating system:
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Question 3 of 15
3. Question
1 pointsThe primary air is admitted at a ratio of about _____ parts primary air to 1 part gas, for manufactured gas
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Question 4 of 15
4. Question
1 pointsPrimary air is regulated by means of an adjustable shutter
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Question 5 of 15
5. Question
1 pointsThe Bunsen burner flame is ______ in color:
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Question 6 of 15
6. Question
1 pointsFlame test can be carried out inorder to identify the leaks in the gas piping:
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Question 7 of 15
7. Question
1 pointsJoint compound in gas piping is applied sparingly to the ______ threads only
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Question 8 of 15
8. Question
1 pointsAn _______ is characterized by a burner tube that extends horizontally from the unit and then bends to assume a vertical position
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Question 9 of 15
9. Question
1 pointsNatural gas has a heating value of approximately _______ Btu per cubic foot:
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Question 10 of 15
10. Question
1 pointsNo more than ______ of Carbon monoxide is allowed in furnace flue gases air measurement:
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Question 11 of 15
11. Question
1 pointsThe division of air into primary and secondary types is a matter of which of the following:
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Question 12 of 15
12. Question
1 pointsA draft hood will also control backdrafts that tend to extinguish the gas burner flame and the amount of excess air.
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Question 13 of 15
13. Question
1 pointsToo much _____ causes the flame to lift off the burner ports:
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Question 14 of 15
14. Question
1 pointsWhich of the following fuel is used in Direct Gas-Fired Heating Systems:Correct
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Question 15 of 15
15. Question
1 pointsIn the air stream leaving direct gas-fired units, concentrations of Carbon monoxide as per ANSI shall not be more than _______Correct
Incorrect