HVACR equipment placement may be affected by local ordinances governing:
A) Noise. B) Vibration. C) Costs. D) Traffic.
A
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The Society of Automotive Engineers (SAE) provides standard definitions applicable to AWD and 4WD systems which is used consistently by manufacturers to provide clarity.
Answer the following statement true (T) or false (F)
An alternating current motor's speed is determined by the frequency of the power supply only.
Answer the following statement true (T) or false (F)
Installing nail-on device boxes, panelboards, and lighting fixtures in new houses are tasks performed by _____.
a. commercial electricians b. electrical maintenance technicians c. industrial electricians d. residential electricians
_________________ are devices activated by contact with an object that changes the state of its contacts when the object exerts a certain amount of force.
A. Limit switches B. Inductive proximity switches C. Photoelectric proximity switches D. Hall effect sensors