Problem 8.2 The power source characteristics is given by I²=- 350 (V – 90) and the volt-age-length characteristics of a DC are is expressed by V = 25 + 51, where I is the arc length in mm,and V is the are voltage. Find the change in welding current for a change in arc length from5 mm to 7 mm.

Answered: Image /qna-images/answer/b43bc0c9-bb41-4608-9428-6feb260c1552.jpg

Answered: Problem 8.2 The power source…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Problem 8.2 The power source characteristics is given by l²=- 350 (V – 90) and the volt- age-length characteristics of a DC arc is expressed by V=25+51, where I is the arc length in mm, and V is the arc voltage. Find the change in welding current for a change in arc length from 5 mm to 7 mm.