What does the term "interoperability" mean?
A) The air-conditioning control system will function using either iOS or Android.
B) Components from different manufacturers can function properly in the same system.
C) An evaporator coil from one manufacturer can be connected to a condensing unit from another manufacturer.
D) The air conditioner and furnace can operate at the same time.
B
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?Electrode classifications are prefixed with the letter ____.
A. ?E B. ?F C. ?K D. ?L
What would happen if the fan on an electric unit heater burned out?
A. The heater would remain energized until the fusible link melts. B. The interlock switch would de-energize the electric heater. C. The unit will still heat the area, but it would take longer to do so. D. Both a or b are possible.
To determine if a windshield wiper problem is electrical or mechanical, the technician should ________
A) Check the washer fluid for contamination B) Check the condition of the wiper blades C) Disconnect the linkage from the windshield wiper motor and operate the windshield wiper D) Check to see if the fuse is blown
How does the reversing valve switch a heat pump between heating and cooling modes?
a. It reverses refrigerant flow through the compressor. b. It causes both check valves to allow refrigerant flow to the indoor coil. c. It causes both metering devices to meter refrigerant. d. It reverses refrigerant flow through the indoor and outdoor coils.