Purging refrigerant lines with nitrogen during brazing prevents _____.
a. acid formation
b. overheating
c. copper oxide formation
d. refrigerant migration
c. copper oxide formation
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Referring to figure shown below, a blown fuse F5-C would prevent the low air lamp from illuminating.
Answer the following statement true (T) or false (F)
Weld neck flanges must be marked with the weight so the _____ will match.
a. bores b. outside diameters c. length of the neck d. shapes
Computer speed is measured in ________
A) Bytes B) Clock speed (Hz) C) Voltage D) Baud rate
Why should air velocity in branch ducts be limited to 600 feet per minute?
A) To allow the air to establish an insulating air boundary layer inside the duct B) To minimize air noise C) To keep the blower speed down to a reasonable RP D) To encourage proper mixing of the air inside the duct