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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695

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Chapter
Section
BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695
Chapter 3, Problem 12R
Textbook Problem
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What is the higher voltage at the electrode before the arc is struck called? What is its advantage to welding?

To determine

The name of "The higher voltage at the electrode before the arc is stuck"

The advantage of the higher voltage at the electrode before the arc is stuck to welding.

Explanation of Solution

The shield metal arc welding machine's voltage output decreases when the current increases. The output power supply provides a sensible high open voltage circuit before the arc is stuck. The top open circuit voltage rapidly stabilizes the arc. The arc voltage quickly drops to the lower closed circuit level after the arc is stuck. The power remains constant despite the changes in the arc length when the short starting flows...

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