What is the primary purpose of the NEC®?
a. To provide instruction on correct electrical installations
b. To regulate the tasks performed by electricians
c. To safeguard persons and property from electrical hazards
d. To list all types of electrical equipment and their quality
c
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Flow switches are used to control high current loads.
Answer the following statement true (T) or false (F)
The datum system is a set of symbols and rules on how to constrain a part to establish a relationship between the part and ____________________ tolerance zones.
What will be an ideal response?
Animals may be more _____ if they belong to a given bloodline.
Fill in the blank(s) with the appropriate word(s).
To minimize corrosion in a steam boiler, the P-alkalinity of the boiler water should be maintained between
_____. a. 50 and 100 ppm b. 100 and 200 ppm c. 200 and 300 ppm d. 300 and 700 ppm