A good way to fasten acoustical lining to the inside of sheet metal duct is to use ____.
A. "S" fasteners (slips) and drive clips
B. staples and tape
C. self-tapping screws and draw bands
D. tabs and adhesives
Answer: D
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A mixing chamber takes flows from three inlet pipes and combines them into one outlet flow. The chamber operates at steady-state conditions with steady flows. The outlet flow is measured as 3.1 kg/s of water, while two of the inlet flows are known to be 1.2 kg/s and 0.9 kg/s of water. What is the mass flow of rate in the third inlet?
Given: Inlets: States 1, 2, 3. Outlet, State 4 m?1 = 1.2 kg/s; m?2 = 0.9 kg/s; m?4 = 3.1 kg/s What will be an ideal response?
The underlined part of this thread note, 1/2–13UNC–2B LH, means:
a. light helix b. limited hold c. long helix d. left hand
A whole-house dehumidifier:
A) Requires that a plastic bucket be emptied twice a day. B) Can connect to ductwork to dehumidify the air in the entire house. C) Normally conditions one room at a time. D) Is installed in an existing air handler, replacing the evaporator coil.
CAD stands for Computerized Art Drawing.
a. True b. False