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Heating Effect of Electric Current

Two plates of...

Question

Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the plate thickness changes, welding is achieved by

A

Adjusting the duration of the current

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B

Adjusting the current

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C

Changing the electrode size

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D

Changing the electrode coating

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Solution

The correct option is B Adjusting the current
On increasing current, heat generated could be increased, resulting into penetration to a greater depth.

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