What is the range of MERV ratings?
A) High, medium, and low efficiency
B) From 1 to 20, with 1 representing the highest efficiency
C) From 1 to 20, with 20 representing the highest efficiency
D) From 0% to 99%
C
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Rear air-conditioning systems use ________.
A) A TXV to control the refrigerant flow into the front evaporator and an orifice tube with the rear evaporator B) A TXV to control the refrigerant flow into the front evaporator and the rear evaporator C) An orifice tube to control the refrigerant flow into the front evaporator and a TXV with the rear evaporator D) An orifice tube to control the refrigerant flow into the front evaporator and the rear evaporator
The solar load on a structure is the heat gain resulting from the ____.
A. heat from the surrounding air conducted through the materials of the structure B. air infiltration C. heat from the radiation from the sun D. dry-bulb inside the structure
The highest amount of resistance that can be read by the meter set to the 2k ohm scale is ________
A) 200 ohms B) 2000 ohms C) 200k ohms D) 20000000 ohms
A single-zone constant-air-volume system is best suited for conditioning:
A) A building that needs close control of several different areas. B) A building's core area. C) An area with a big variation in load. D) The perimeter of a building.