A rectifier allows a current to flow in one direction only.
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Q14: The operating voltage will vary with arc
Q15: Engine-powered generators are widely used for _.
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Q16: Before the invention of the inverter-type welder,
Q17: _ machines may have a large number
Q18: In _, the electrode is negative, and
Q20: Voltage is the measurement of electrical pressure
Q22: The SMA welding machines' voltage _ decreases
Q23: In alternating current, the electrons change direction
Q24: Amperage controls the size of the _.
Q32: An electric current is the flow of
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