Newer-style gun burners with special air-handling parts should be set in what range of CO2 percentage?

A) 7—9 percent B) 11—13 percent C) 9—11 percent D) 0—3 percent


C

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What type of Registered Jack (RJ) connector has a total of 8 pins?

A. RJ-11 B. RJ-12 C. RJ-14 D. RJ-45

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What is the demand factor allowed by the NEC® for calculating the neutral conductor size for an electric range load?

a. 70% b. 80% c. 100% d. 125%

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In which of these situations is it necessary to use outdoor air for combustion on an induced-draft furnace?

a. It is always necessary. b. In locations where the outdoor temperature does not fall below 32°F. c. When the furnace is within 50' of a living space. d. When there are chemicals near the furnace.

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If the opening inventory is 100 units, the sales are 500 units and the ending inventory is 200 units, then manufacturing must produce:

A) 500 units. B) 300 units. C) 600 units. D) 400 units. E) none of the above

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