Exhaust back pressure of an engine running at idle should be ________
A) 2.5 in. Hg B) 1.5 in. Hg C) 2.5 PSI D) Less than 1.5 PSI
D
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Which of the following are defined by the NEC® as separate portions of a conduit that provide access through a removable cover to the interior of the system at a junction of two or more sections?
a. Conduit bodies b. Junction boxes c. Pull boxes d. Entrance ells
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Until the pipeline has been tested, you must not remove the _____.
a. turnbuckle b. valve c. travel stops d. sway braces
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Are angles A and B known as supplementary or complementary angles?
What will be an ideal response?
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Cable trays mounted in a tunnel are most likely to use _____.
a. pipe rack mounting b. wall mounting c. trapeze mounting d. direct rod suspension
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