A common method of starting defrost uses an air pressure switch that measures the difference in pressure ____.
A. between the fan compartment and the evaporator coil
B. between the outdoor pressure and the fan discharge pressure
C. of the air across the outdoor coil
D. of the refrigerant in the condenser and the pressure in the coil
Answer: C
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Fill in the blank(s) with the appropriate word(s).
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A liquid's reaction to pressure is the basis for which of the following applications?
A. Pneumatic B. Hydraulic C. Mechanical D. Electronic
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How does forced convection differ from natural convection?
What will be an ideal response?
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