What are post tension cables, reinforcing rods, and wire mesh used for in construction?
A) Reinforcing residential roofing B) Reinforcing light frame construction
C) Reinforcing concrete D) Reinforcing asphalt driveways
[Ques. 2] To check for electrical potential at a switch or a load, technicians use a(n):
A) Ammeter. B) Voltmeter. C) Ohmmeter. D) Potentiometer.
[Ques. 3] One principle that makes heat pump operation possible is:
A) Moving heat quickly through a cold object will create thermal induction, drawing in heat from the colder surroundings.
B) Air velocity over a coil will create friction, raising the temperature of the coil.
C) The temperature at which a material boils depends on its pressure.
D) Heat will flow up hill when subjected to a strong magnetic field.
[Ques. 4] A residential HVACR communicating control system includes (you may select more than one):
A) A satellite uplink.
B) A communicating thermostat or controller.
C) Communicating equipment control boards.
D) A dedicated wireless router made specifically for HVACR.
[Ques. 5] How are transformers in the HVACR field rated?
A) By induction ratio B) By step-down capacity
C) By secondary power output D) By primary power output
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