The opposition offered to current flow by an inductor in an AC circuit is called ____________________.

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


inductive reactance

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Laser beams have a heat input of ____ joules.

A. 0.001 to 0.01 B. 0.01 to 0.1 C. 0.1 to 10 D. 1 to 10

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What is the total system charge for a system with a factory charge of 56 oz of R-410A, an assumed length of 15 ft, and a 3/8 in liquid line that is 35 ft long?

A) 56 oz + 12 oz = 68 ounces B) (35 - 15 ) × 0.6 = 12 ounces C) 56 ounces D) 56 oz + 21 oz = 77 ounces

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This is the vertical distance measured from the tread nosing to a wall or floor above the stairs:

A. headroom B. stringer C. stairwell D. guardrail E. kick block

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When required to drill holes on a roof that has no power supply, the best drill for the job would be a ______________________________.

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

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