The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks fall below _____ psi.
a. 60
b. 80
c. 40
a. 60
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Why are two sets of contacts (one set normally open and one set normally closed) needed on an indoor fan relay?
a. To allow high-speed operation in heating. b. To allow low-speed operation in cooling. c. To allow high-speed operation after a time delay. d. To ensure only one motor speed winding is energized at a time.
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Which of the following is a possible long-term effect of exposure to indoor air pollutants?
a. Headache b. Cancer c. Eye irritation d. Drowsiness
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Rotating pastures will help break the internal parasite cycle
Indicate whether the statement is true or false.
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Describe the operation of the clutch, giving information that explains how the clutch releases and energizes.
What will be an ideal response?
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