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HVAC Heating Practice Test Questions Answers 2
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Question 1 of 10
1. Question
1 pointsIncomplete combustion includes which of the following products: (Multiple Answer Question)
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Question 2 of 10
2. Question
1 pointsHeavier oils number 4, 5 and 6 are preheated to ______ :
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Question 3 of 10
3. Question
1 pointsAll oils are converted to vapors before they burn
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Question 4 of 10
4. Question
1 points______ boilers are used extensively for comfort heating applications:
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Question 5 of 10
5. Question
1 points_____ separates the steam side of the heating system from the condensate side:
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Question 6 of 10
6. Question
1 pointsAir is forced into the combustion chamber by ______ fan or blower to maintain a positive pressure in boiler:
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Question 7 of 10
7. Question
1 pointsOperation of the boiler or furnace with excess air by 10% may reduce boiler efficiency by about _______ :
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Question 8 of 10
8. Question
1 pointsThe boiling temperature of the liquid can be changed by changing the pressure on the liquid:
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Question 9 of 10
9. Question
1 pointsA layer of soot or scale having 0.18 inches thick can reduce heat transfer by:
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Question 10 of 10
10. Question
1 pointsThe heating capacity of electric heating systems is usually expressed in which of the following units
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