What is the purpose of a chiller economizer?
A) To superheat the liquid refrigerant before it enters the chiller
B) To limit the compressor current draw
C) To subcool the liquid refrigerant before it enters the chiller
D) To use outdoor air for cooling
C
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Reinforcing bars should be _____.
a. heated with a torch before bending b. bent no more than 90 degrees c. lubricated before bending d. bent cold
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Explain the meaning of the numbers in the SAE and AISI classification systems.
What will be an ideal response?
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Name two U.S. organizations that are developing wind technician standardized competency tests.
What will be an ideal response?
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The normal fluid temperature drop through a glycol coil on a secondary cooling loop is:
A) 20°F. B) 5°F. C) 10°F. D) 15°F.
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