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)
False
Rationale: The speed of an alternating current electric motor is determined by the number of motor poles and the frequency of the power supply.
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A concrete slab provides a firm floor system with little or no maintenance and generally requires less material and labor than a conventional wood floor system.
Answer the following statement true (T) or false (F)
The life safety branch of an EES provides power to _____.
a. alarm systems b. emergency rooms c. nurse call systems d. task illumination in intensive care units
In what ways do surface datum feature symbol applications, axis datum symbol applications, and center plane datum symbol applications differ from each other?
A. When surface datums are shown on extension lines, they are offset from the dimension line arrows, while axis datums and center plane datums can align with dimension line arrowhead. B. In surface datum symbols the equilateral triangle is filled, while in axis datums and center plane datums the equilateral triangle is left unfilled. C. Axis datums and center plane datums are verified from one of the existing surfaces. D. The surface datum is the only one to position the part in relation to a datum reference frame. E. none of the above
When working with a circle, ?d represents _____
a. the diameter b. the radius c. the circumference d. an arc