What percent of opacity means that the exhaust is so dark that it completely blocks light from a beam projected through the exhaust smoke?

A) 25% B) 100% C) 50% D) 0%


B

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Which of the following loads does not require a grounded circuit conductor?

a. Two wires, 120 volt b. Three wires, 120/240 volt c. Two wires, 240 volt d. None of the above

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Select the safety controls found on a flake ice machine that are not typically found on a cube machine. You may select more than one

A) High-pressure switch B) Auger motor overcurrent sensor C) Auger rotation sensor D) Low water safety cutout E) Ice thickness sensor

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Coil polarity is determined by the ________

A) Saturation direction B) Direction of lamination C) Turn ratio D) Direction of the coil windings

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In hand-set multicomponent decks, joists normally _____

a. are laid across the stringers b. are fabricated from aluminum c. support the stringers d. are spaced a minimum of 10' apart

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