The vertical clearance above roof level must be maintained for a distance of at least ____ ft from all edges of the roof.
A. 3
B. 4
C. 6
D. 8
Answer: A
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A fixed-orifice tube ________.
A) Has a pressure sensing capability B) Is usually located in the evaporator inlet or line to the evaporator C) Has a temperature sensing capability D) Has an internal valve
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The principle of magnetic ____ states that whenever a conductor cuts through magnetic lines of flux, a voltage is induced into the conductor.
a. induction b. resistance c. flux d. generation
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Which hatch pattern can be used to represent shingle siding?
A. AR-RSHKE B. LTSCALE C. AR-SAND D. BRICK
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Many conditions leading to an unsoundness or blemish are ____________________ or treatable.
Fill in the blank(s) with the appropriate word(s).
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