How can an air-source heat pump heat when the outdoor temperature is cold?
A) Air-source heat pumps only use the outdoor air in the cooling season.
B) All heating is accomplished with electrical resistance heaters, so the air temperature is irrelevant.
C) All molecules contain some heat until they reach absolute zero (-460°F).
D) The friction of the air passing over the outdoor coil raises the temperature.
C
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Explain why the permeability values of air and water vapor through a component are not equal to each other.
What will be an ideal response?
The Bluetooth pairing test validates the ability of the ____________system to pair with a device by simulating the use of a known good compatible phone to test the system operation
What will be an ideal response?
Technician A says that fuel cells produce large amounts of heat. Technician B says that fuel cell energy production creates "low grade" heat. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A dial indicator may be mounted by _______
A) Threaded rod B) Clamp mount C) Magnetic mount D) Any of these