Describe the difference between a flooded and a dry (direct expansion) type cooler
What will be an ideal response?
In a flooded cooler the refrigerant surrounds the outside of the tubes and the chilled water is circulated through the inside of the tubes. A "dry" direct expansion type cooler will circulate the refrigerant through the inside of the tubes and the chilled water will surround the outside of the tubes.
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Why should the temperature inside the compressor be kept under 300°F?
A) Because the compressor oil starts to break down above 300°F B) Because the metal components inside the compressor will start to melt C) Because the refrigerant starts to fractionate above 300°F D) Because the refrigerant starts to boil inside the compressor above 300°F
The REVSURF command will proceed if the curve to be revolved forms a closed contour
Indicate whether the statement is true or false
What type of glove should be used to handle dangerous acids or alkalis?
A. Leather gloves. B. Any glove that covers the entire hand. C. Vinyl disposable gloves. D. Hazardous materials gloves.
Identification numbers in assembly prints are generally placed ____.
A. in the margin B. in balloons C. in the parts list D. in the title block E. none of the above