How is Indoor Air Quality (IAQ) defined?
A) Air that is free from toxins, irritants, and noxious chemicals
B) The state of the air contained within an enclosed building
C) Cleaning the air inside a building to acceptable levels
D) Air that is within the human comfort range and free of noxious substances
B
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Some fan switches are designed with large enough contacts to permit them to control the operation of the ____ without a fan relay.
a. controller b. control module c. blower motor d. resistor
In a water-cooled condenser, a regulating valve is used to control the ____.
A. refrigerant flow through the pressure reducing device B. refrigerant head pressure C. suction pressure D. water temperature
The main area of expense that the shop manager can control would be ________
A) Direct expenses B) Heating and lighting expenses C) Rent D) None of the above
When tubing is cut with a tubing cutter, a burr is produced in the process. This slight decrease in the inside diameter of the tube can adversely affect the operation of the system.
Answer the following statement true (T) or false (F)