Why should the evaporator NOT be installed above the door in a walk-in cooler or freezer?
A) It will run constantly.
B) There is no restriction for this location.
C) It may cause problems for the store owner.
D) It will draw in warm, humid air and frost more quickly.
D
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Answer the following statement(s) true (T) or false (F)
NFPA 58 dictates requirements for installations inside the building.
In the compression refrigeration cycle, the refrigerant is superheated:
A) Leaving the evaporator, through the compressor, up to the condenser. B) The refrigerant is not superheated anywhere in the compression cycle. C) The refrigerant contains some superheat throughout the cycle. D) Leaving the compressor, through the condenser, up to the metering device.
Why do many central system chillers use water cooled condensers?
What will be an ideal response?
Common-collector amplifiers are known for their
A) high input impedance and low output impedance B) high input and output impedances C) low input and output impedances D) low input impedance and high output impedance