arc 331

1. If you only add moisture to the air in which direction is the movement in the psychrometric chart?
a) to the top
b) to the right
c) to the left
d) to the bottom
e) none of the above

2. You are designing a building for a very hot location. Which of the following is a better method to
reduce solar heat gain (heat gain by radiation) through the windows so that the building does not
overheat:
A) Interior venetian blinds
B) Interior curtains
C) Exterior shutters
D) Double glazed windows

4. When is the sun lowest in the sky in North America?
A) December 21
B) June 21
C) September 21
D) March 21

5. In an enclosed space with a heated ceiling the air will naturally convect from the top to the bottom
because the air at the top has a lower density.
a) True b) False

What type of solar protection is creating this shadow mask in the sun path diagram?
A) a fin
B) an overhang
C) a combined system with a fin and a mask
D) none of the above
E) it is impossible to determine because the information is incomplete

9. What can I use to measure sensible heat of the air?
A) an anemometer
B) a thermometer
C) a wet bulb thermometer
a) a thermostat

10. You must design the shading system for a window that is 6 ft wide. After determining potential
overheated hours and doing the analysis with the sun path diagram and the shadow angle protractor you
determine that you need a Vertical Shadow Angle (VSA) of 45 degrees. You are consulting for the
designer and he wants to place two horizontal elements instead of just one overhang. What is the
required dimension of these two elements to provide the required shading?
A) 3 ft each
B) 4.5 ft each
C) 6 ft each
D) 1 ft each

12. Which of these has more energy stored inside?
A) 1lb of concrete at 100 F
B) 1 lb of concrete at 200 F
C) 2 lbs of water at 200 F
D) 2lbs of concrete at 100 F

13. What requires more heat?
A) To change the state of one pound of water from a liquid to a gas (evaporate)
B) To raise the temperature of a pound of water from 80 F to 85 F.
C) To melt one pound of water
D) To raise the temperature of water from 85 F to 86 F

14. Which of these forms of heat can be transferred through vacuum?
A) heat by convection
B) heat by radiation
C) heat by conduction

15. What is the resistance of a 0.5” air space in a horizontal roof and in which the heat is moving up. The
air space has aluminum foil on both of its sides. The mean temperature is 50 F and the temperature
difference is 30 F.
A) 1.62
B) 1.29
C) 0.96
D) 1.57

16. Peter Simmonds came to our class on Friday as a guest lecturer. He was
A) an architect
B) A reality show star
C) a mechanical engineer
D) a retired rocker

17. What are the optimum tilt and orientation for photovoltaic panels in a city in South America that is
located at a latitude of 35 degrees south?
A) 35 degree tilt and oriented north
B) 35 degree tilt and oriented west
C) 45 degree tilt and oriented north
D) 35 degree tilt and oriented south
E) 45 degree tilt and oriented north