What is a major advantage of a valve rotator?

A. sharper interference angle may be used
B. reduce carbon buildup on seat
C. lower tension valve springs can be used
D. exhaust valves run cooler


Answer: B

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The two most significant cost factors in the construction process are _____.

a. financing and purchasing b. time and control c. permits and utilities d. labor and equipment

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What is the relationship between backlash and helical gears?

What will be an ideal response?

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When installing a refrigeration system, the piping should be connected with as few joints as possible.

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

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When the pressure of a vapor goes up:

A. Its temperature an boiling point go down B. Its temperature and boiling point go up C. Its temperature goes up while its boiling point goes down D. Its temperature goes down while its boiling point goes up

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