Before a steel plate is used for practice welding, mill scale on the plate is removed because the DCEN used in GTAW has little or no _____

A) electrical conductance B) flux resistance
C) cleaning action D) arcing ability


C

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A conventional oxygen sensor can have how many wires?

A) 3 B) 1 C) 4 D) Any of the above

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Which of the following is not a standard digital code?

A) ARRL B) ASCII C) Gray

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Discuss how center, extension, and dimension lines are usually given on a drawing.

What will be an ideal response?

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A ____ is equal to one-millionth (1/1,000,000) of an ampere.

A. nanoampere B. picoampere C. microampere D. milliampere

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