TAB work for residential systems involves measuring airflow rates and adjusting the volume control devices and/or blower speeds to maintain the desired airflow in the air distribution system. For the most part, the acceptable air volume in the air distribution system is within __________ of the desired airflow rate.
A. 5%
B. 8%
C. 10%
D. 12%
Answer: C
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The temperature on both sides of an exterior wall or panel is needed to help determine how much heat is entering or leaving the structure.
Answer the following statement true (T) or false (F)
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Technician A says that if the original lifters are being installed, they must be put back in their original position. Technician B says that the lifter bore clearance should be checked with Plastigage prior to installation. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
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8 × (-10 ) =
A) -2 B) 80 C) -80 D) None of these
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A ____ is used to show the area surrounding the construction site.
A. topography plan B. vicinity map C. landscape plan D. grading plan
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