A spray gun needs 22 psi of pressure; the air must travel through a flexible air hose 50 feet long, and the air hose loses 12 psi every 25 feet of length. At what pressure must the wall regulator be set?
What will be an ideal response?
46 psi
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What is a group of fixed or parallel tubes through which process fluids are circulated?
A. Shell B. Tubesheet C. Tube bundle D. Exchanger head
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Why must an arcing device be contained within a special enclosure?
a. To prevent the ignition of hazardous vapors b. To keep out dust and protect the device c. To allow gases and vapors to enter the conduit system d. To lock out any unauthorized users of the device
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Iron is an exhaustible resource. Does that mean we will run out of iron soon?
What will be an ideal response?
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A certain unsharpened cylindrical pencil is 1/4 inch in diameter and 10 inches long. What is the pencil’s surface area?
a. 2 in2 b. 4 in2 c. 6 in2 d. 8 in2
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