Why are explosion-proof motors not normally used on standard equipment?
A. They are too large.
B. They are too noisy.
C. They are too expensive.
D. They cannot be replaced.
Answer: C
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What will be an ideal response?
Karnaugh mapping is the preferred method to design logic circuits from an excitation diagram. Sum of product expressions can be formed directly from excitation tables. For J = X; K = X conditions:
A) do not form SOP expressions for X inputs. B) X must be treated as a 0. C) X must be treated as a 1. D) any of the above
Which of these heating methods is most commonly used as a heat source in cold climates?
a. Kerosene heaters b. Coal furnaces c. Natural gas furnaces d. Electric heaters
________________ testing determines whether the pump is producing its specified output.
Fill in the blank(s) with the appropriate word(s).