The building code or health department code often requires a _________________ test before the system can be approved.

A. Percolation
B. draining
C. roughing
D. leaching


Answer: A

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An accumulator at the outlet of the evaporator is there to ____.

A. accumulate moisture in the system to reduce frost formation B. allow the evaporator to operate as full as possible with liquid refrigerant C. provide space for refrigerant vapor to collect D. accumulate foreign particles and other contaminants

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List four ways in which section view can be highly useful on a print.

What will be an ideal response?

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Ground-up aluminum can react violently with which of the following?

A) Oxygen B) CFC and HFC C) HFC D) CFC

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The absolute pressure of a fluid point at a certain depth can be calculated using the following equation:


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