Switch symbols are sometimes combined so that a more complex switch can be represented.
Answer the following statement true (T) or false (F)
True
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Suppose that traffic congestion has rendered the distance-based impedance function unsuitable for Problem 12-16. A detailed survey yields present-day commodity flows shown below. In the future, state #1 lumber production will increase to 18,000 and state #2 lumber consumption will increase to 21,000. Estimate the lumber flows between the three states.
What will be an ideal response?
A Class A GFCI device is designed to trip when fault current levels are _____ milliamps or more and not to trip when the fault current is less than _____ milliamps.
a. 6, 4 b. 4, 6 c. 6, 5 d. 5, 2
A fuel cell produces electricity from ________ and ________
A) Gasoline/ oxygen B) Hydrogen/ oxygen C) Nitrogen/ hydrogen D) Water/ oxygen
After heating 2 ft3 of gas at 50 psia from 300° R to 600°R at 50 psia, the volume of the gas will be:
A) 2 ft3 because the pressure did not change. B) 4 ft3 because the volume and temperature vary directly. C) 1 ft3 because the temperature and volume vary inversely. D) The final volume cannot be determined without knowing the specific gravity of the gas.