Split system heat pumps have a third service valve that is not connected to either refrigerant line. This extra valve:
A) Is only needed during the cooling cycle.
B) Is a backup in case one of the other service valves quits functioning.
C) Is used to read the defrost pressures during the defrost cycle.
D) Is always connected to the low side of the system regardless of the operating cycle.
D
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The manufacturer determines the ____ by multiplying the rated-load current, or the branch-circuit selection current of the hermetic refrigerant motor-compressor, by 125 percent.
A. maximum continuous current B. maximum overcurrent C. maximum circuit ampacity D. minimum circuit ampacity
Define and explain the concept of quality management.
What will be an ideal response?
All of the following are components of a lockout/tagout procedure, except _____.
a. preparation for lockout/tagout b. sequence for lockout/tagout c. restoration of energy d. distribution of keys
An antigen is usually a _____
a. carbohydrate c. sugar b. protein d. amino acid