If one branch of a parallel circuit opens, the other branches are not affected because their current through ________
A. decreases
B. stops
C. increases
D. remains the same
D
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A(n) ____________________ plan is prepared by the architect or structural engineer and shows the footings, foundation walls, and any items that support the structure.
Fill in the blank(s) with the appropriate word(s).
The examine if open instruction ________
A) Is an input instruction only used for field devices with NC contacts B) Can only be assigned an input file address starting I: C) Has the following logic symbol (-| |-) D) Has the following logic symbol (-|/|-)
Where are electric auxiliary heat strips normally located in air-source heat pumps?
A) Next to the indoor coil to keep it warmer when the heat pump capacity drops B) Next to the outdoor coil to keep it warmer in cold weather C) In the return air, before the coil D) In the discharge air of the fan
In what year did federal law mandate the metric system as the preferred system of measurement for the United States?
A. 1978 B. 1982 C. 1988 D. 1999