Engine balance is being discussed. Technician A says balance in an in-line engine is not as important as in a V-type engine. Technician B says some steel crankshafts must not be replaced with a cast crankshaft or balance problems may occur. Who is right?

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


Answer: C

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Explain how to determine the R-value of your home’s present attic insulation.

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To avoid the creation of oxides in the refrigeration lines of mini-split systems, the lines are assembled:

A) Using Reflok fittings. B) By brazing the connections while flowing nitrogen through the lines. C) Using standard flare fittings. D) Using heavy-walled flare fittings.

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A vehicle waiting at a stop light with the brakes applied is held in place by _____ friction.

A. static B. kinetic C. both "static" and "kinetic" D. neither "static" nor "kinetic"

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The lines that provide information on the size of the object; for example, how wide it is and how long it is are known as

a. dimension lines b. extension lines c. leaders d. none of the above

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