When a safety pop-off valve continuously unloads, which of the following should be performed first?

A. The governor should be replaced
B. The compressor should be replaced
C. The unloader air circuit should be checked
D. The primary circuit pressure should be checked


C. The unloader air circuit should be checked

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Which of the following is used to measure the amount of current passing through a wire?

a. voltmeter b. ammeter c. ohmmeter d. circuit breaker

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Each sheet in a set of drawings has a sheet ______.

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

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The most common material used for insulating wall cavities in residential construction is

A) loose fill fiberglass B) spray on foam C) loose fill cellulose D) fiberglass batts

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In the accompanying figure, the arrow points to a(n) ____.

A. counterbored hole B. chamfered hole C. countersunk hole D. extension hole

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