A reinforced concrete beam measures 12 in. × 24 in. in cross section. If the density of reinforced concrete is 1 50 lb/ft3, the weight of the beam is
A) 300 lb/ft3.
B) 450 lb/ft.
C) 300 lb.
D) 300 lb/ft.
E) 350 lb/ft.
D) 300 lb/ft.
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Which act or organization regulates air conditioning refrigerant?
A) Code of Federal Regulations (CFR) B) Clean Air Act (CAA) C) WHMIS D) MSDS
What is the AHRI "A" performance testing condition for air cooled air conditioning equipment?
A) 90°F outside ambient, 85°F indoor dry bulb, 70°F indoor wet bulb B) 95°F outside ambient, 75°F indoor dry bulb, 75°F indoor wet bulb C) 95°F outside ambient, 80°F indoor dry bulb, 68°F indoor wet bulb D) 100°F outside ambient, 75°F indoor dry bulb, 72°F indoor wet bulb
If an actual part is large, the dimensions for a drawing are reduced by multiplying the actual dimension of the part by a scale factor greater than 1.
Answer the following statement true (T) or false (F)
Mechanical drawings for HVAC systems are typically shown in which type of view?
a. Section b. Plan c. Elevation d. Cutaway