Select a major function of a pipe thread.

A. an assembly that creates a pressure-tight joint, with or without a sealer
B. an assembly with a free/loose fitting mechanical joint that is not pressure-tight
C. an assembly with a rigid mechanical joint that is not pressure-tight
D. all of the above


Answer: D

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The flow switch is constructed from a snap-action ____.

a. dual switch b. micro-switch c. dip switch d. pressure switch

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After being cleaned, the condenser tubes may be checked for stress cracks, erosion, wear on the outside and other defects, by means of what type of instrument?

What will be an ideal response?

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Which of these installation steps listed is normally performed first?

A) Leak testing the system B) Charging the system C) Commissioning D) Evacuating the system

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Refer to the figure. Assume 2-1/2" threaded. If J=4", what is the e-e measurement of J?

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

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