If an electric heater has three heating elements connected in parallel, why does each element have its own fusible link and limit switch?
What will be an ideal response?
The air flow may be restricted across part of the heater. All elements must be protected!
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DWV copper stands for drain, waste and vent and is also a lightweight copper not typically used in the HVACR industry as far as refrigerant-carrying applications are concerned.
Answer the following statement true (T) or false (F)
What do the letters “LED” stand for?
a. light-efficient diodes b. low-emission diodes c. light-emitting diodes d. laser-emitted diodes
Engine heat is removed by which of the following?
A. Air passing over the radiator B. Oil lubricating moving components C. Engine surface area to the surrounding air D. All of the above
What is the term for keeping a ladder from slipping by applying one's weight to the underside of it?
a. heeling b. securing c. anchoring d. tying-in