A variable displacement compressor:
A. Cycles the clutch to regulate temperature
B. Changes the compressor displacement to regulate the temperature
C. Uses control valve to change the angel of the wobble plate
D. Both statements B and C are correct
Answer: D
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Los adhesivos para aislamiento de espuma flexible:
a. son a base de solvente. b. se colocan al instante. c. son de color rojo. d. pueden quedar al descubierto durante largos períodos de tiempo.
Which of the following terms best describes the study or theoretical explanation of natural phenomena?
a. Ecology c. Science b. Biology d. Agriculture
When the floor system extends beyond the foundation, the floor joists become ____ joists.
a.unsupported b.free c.cantilevered d.auxiliary
The dimensions of an enclosed gabled building are shown in Figure P2.13a. The external pressures for the wind load perpendicular to the ridge of the building are shown in Figure P2.13b. Note that the wind pressure can act toward or away from the windward roof surface. For the particular building dimensions given, the C p value for the roof based on the ASCE standard can be determined from Table P2.13, where plus and minus signs signify pressures acting toward and away from the surfaces, respectively. Where two values of C p are listed, this indicates that the windward roof slope is subjected to either positive or negative pressures, and the roof structure should be designed for both loading conditions. The ASCE standard permits linear interpolation for the value of the inclined angle of
roof ?. But interpolation should only be carried out between values of the same sign. Establish the wind pressures on the building when positive pressure acts on the windward roof. Use the following data: basic wind speed = 100 mi/h, wind exposure category = B, K d = 0.85, K zt = 1.0, G = 0.85, and C p = 0.8 for windward wall and –0.2 for leeward wall.
