The device used to carry air from the interior to the exterior of a structure is a(n) _____.
a. exhaust air duct
b. VAV box
c. makeup air duct
d. fresh air duct
a. exhaust air duct
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Aboveground horizontal runs of glass pipe should be supported by padded hangers that are spaced every _____.
a. 15 to 20 feet b. 12 to 14 feet c. 8 to 10 feet d. 3 to 6 feet
The radius of a circle is 17.05 cm and the central angle is 240o. What is the area of the sector to the nearest tenth of a sq cm?
A. 600.7 B. 608.8 C. 616.7 D. 620.9
The total circuit resistance of a parallel circuit will always be:
A) Less than the lowest individual resistance. B) More than the highest individual resistance. C) The same as the highest individual resistance. D) The sum of all the individual resistances.
Which of these is also known as electrical potential?
A) Volts B) Amps C) Ohms D) None of these