During welding preparations, what should be set up around the welding area?

a. Oxygen cylinders
b. Cotton curtains
c. Arc blowers
d. Flash shields


d

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This type of section has a cutting plane line that staggers to pass through offset features of an object where the change in cutting plane direction is usually less than 90 ?.

a. full section b. half section c. offset section d. aligned section

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High salinity is more often a problem in arid parts of the country where natural levels of rainfall are

not sufficient to flush salts from soil.

Indicate whether the statement is true or false.

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The heat produced by a rectifier ____.

A. leads to a higher amperage in DC than AC B. reduces the power efficiency of the welding machine C. increases the power efficiency of the welding machine D. can be recycled in a heat sink to provide power to other machines

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A cable ABCD is pulled at end E by a force P (Figure P6.12). The cable is supported at point D by a rigid member DF. Compute the force P that produces a sag of 2 m at points B and C. The horizontal reaction at support F is zero. Compute the vertical reaction at F.

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