Why are there thin metal fins located on the tubes of evaporators and condensers on PTAC units?
What will be an ideal response?
To increase surface area and heat transfer.
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The trailer lighting is typically designed to be grounded through the fifth-wheel.
Answer the following statement true (T) or false (F)
The maximum recommended rate of gas usage from an acetylene tank for intermittent use is _____
a. 50 percent of the bottle contents per hour b. 33 percent of the bottle contents per hour c. 20 percent of the bottle contents per hour d. 10 percent of the bottle contents per hour
The travel angle created when the gun is tilted back so that the electrode tip precedes the gun in the direction of
the weld is called a _____. a. neutral angle b. drag angle c. push angle d. pull angle
The use of CFS, as an alternative to lumber, in load-bearing residential applications, has found favor in some warm, humid areas of United States because CFS is
A) more durable against termite and fungal attack. B) heavier, and hence stronger. C) lower in labor and installation cost. D) noncombustible. E) all of the above.