The standard welding symbol consists of ____.

A. a reference line
B. an arrow and a reference line
C. a reference line, an arrow, and a tail
D. an arrow


Answer: C

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Economies of scale exist when the average cost to produce one unit increases as production increases

Indicate whether the statement is true or false

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This is a major disadvantage of stick welding when compared to MIG welding:

a. it can only be used for flat position welding b. the slag must be cleaned off after each weld bead c. the wire spool needs to be changed frequently d. the gas pressure needs to be adjusted frequently

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An ideal transformer has no power loss

Indicate whether the statement is true or false

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Which of the following is true of barrel faced piston rings?

A. Increased service life but a less effective seal. B. Lower cost and easier to install. C. A less effective seal but better heat transfer. D. A better seal and increased service life.

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