ARC 331 Environmental Controls
Dr. Hofu Wu
Cal Poly Pomona
QUIZ No. 3

Name:

Section: Section One Section Two Section Three


Please answer the following multiple choice questions

(1) In Psychrometric Chart, the saturation line represents the followings except ;

a. 100 percent relative humidity of air.
b. the exact amount of humidity ratio.
c. the dew-point temperature of air.
d. the wet-bulb temperature of air.

(2) The angle between the direction of the sun and the truth south on the horizontal plane is called;

a. Solar Azimuth angle.
b. Solar Altitude angle.
c. Solar Incident angle.
d. Solar-Wall Altitude angle.

(3) On March 21st in Pomona, which one of the following statement is incorrect?

a. The Sun always rises from the east.
b. The earth is tilted on a 23.45¡ angle (declination).
c. The sun's ray is perpendicular to the equator.
d. At solar noon, the sun is at its highest position of the year.

(4) Which angle can be directly applied for calculating the reguired depth of an overhang with the height of a window:

a. Azimuth Angle.
b. Declination Angle.
c. Profile Angle.
d. Solar Altitute Angle.

(5) The action of the air moving along the wet-bulb temperature line toward the saturation line is called;

a. humidification.
b. sensible cooling.
c. mechanical refrigeration.
d. evaporative cooling.



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