1. - What is the standard condition at which air conditioning equipment is designed to operate?
 
 

2. - How is high-efficiency obtained with a condenser?
 

 3. - In an A/C system, the evaporator rejects the heat from the system.

  a) True  b) False

4.- In the expansion device the liquid is converted in gas at lower temperature.

  a) True  b) False
 

5. - For A/C cooling systems, the diffuser should be located near to the ceiling.

  a) True b) False

6. - Given:  Outdoor design of 95? F DB and 78? F WB; indoor design of 80? F DB and 67? F WB; 40,000 cfm required air circulation and 10,000 cfm required ventilation air.  Find:

  a) DB temperature of mixture
  b) WB temperature of mixture
  c) Relative humidity of outdoor air
  d) Specific volume of indoor air

7. - When calculating an A/C system, it is good practice to use 1 Ton for each ________________ sq. ft. of cooling area.

8. - Find the total heat to be removed and thus the refrigeration capacity required for the dance hall from the problem solved in class, assuming that the ventilation provided is now 25 cfm/person ( conditions for nonsmoking place). For smoking places the ventilation should be 35 cfm/person (solved in class). Compare the necessary refrigeration capacity for both situations.