topmcr2004 topmcr2004

14-05-2020
Engineering

contestada

In alternating current, how often does the current alternate between negative and positive? 120 times per second 60 times per second 90 times per second 180 times per second

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oddawsomeman2004 oddawsomeman2004

01-02-2021

Answer:

For Shielded Metal Arc Welding (SMAW) it would be 120 times per second.

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