Camshafts are being discussed. Technician A says cam journals rarely wear so they do not need to be reground. Technician B says reground cams are more expensive. Who is correct?

A. Technician A
B. Technician B
C. Both technicians
D. Neither technician


Answer: A

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Radiant heat is transferred by ____.

A. ultraviolet rays B. infrared rays C. ionization D. refraction

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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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A(n) ____________________ is a voltage reference sensor that will change resistance in response to vacuum or pressure.

Fill in the blank(s) with the appropriate word(s).

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What percentage of the sun's energy reaches Earth?

a. 1 percent c. 10 percent b. 5 percent d. 20 percent

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