The simultaneous presence of flammable gases, flammable liquid-produced vapors, combustible liquid-produced vapors, or combustible dusts shall be considered when determining the ____ of the electrical equipment.
A. grounding arrangement
B. safe operating temperature
C. shielding
D. sparking potential
Answer: B
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Repeat Problem 2–27, except that the design situation is failure by excessive deflection, and it is desired to minimize the weight.
What will be an ideal response?
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A clothing manufacturing plant would most likely be classified as _____.
a. Class I, Division 1 b. Class I, Division 2 c. Class II, Division 1 d. Class III
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The gestation period for llamas and alpacas is from _____ to _____ months
a. 9, 9.5 c. 11, 11.5 b. 10, 10.5 d. 12, 12.5
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Which type of duct material is commonly used for branch runs with a metal duct system?
A. galvanized metal B. fiberglass-wrapped, spiral duct (flexible duct) C. fiberglass, fiberboard sheeting D. round sheet metal
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