In all types of forced-air heating equipment, there must be some method of controlling the fan motor so that the warm air is delivered to the conditioned space at the correct temperature.

Answer the following statement true (T) or false (F)


True

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The fewer the number of poles established in the stator, the greater is the speed in ____ of the rotor.

a. cycles per minute b. phases per minute c. revolutions per minute d. trips per minute

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Technician A says that the torque converter should be removed with the transmission. Technician B says that it is easier to leave the torque converter attached to the engine. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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Which of the following is a major reason that most of the uncultivated but potentially arable lands of South America and Africa should not be used for agricultural production?

A) Their cultivation would increase global biological diversity. B) Their cultivation would aggravate global warming. C) They would contribute little to meeting food requirements. D) They would require expensive irrigation water for high productivity. E) They are too infertile.

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What is the temperature rise of a furnace with a supply air temperature of 130°F, a return air temperature of 75°F, operating in an ambient temperature of 50°F?

A) 50°F + 75°F = 125°F temperature rise B) 130°F - 75°F = 55°F temperature rise C) 130°F - 50°F = 80°F temperature rise D) 75°F - 50°F = 25°F temperature rise

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