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voltage-arc-length
GATE Mechanical Engineering · Joining · 1998-2007
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All concepts →2007 PYQ
A $$DC$$ welding machine with a linear power source characteristic provides open circuit voltage of $$80V$$ and short circuit current of $$800A,$$ during welding with the machine ,...
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1998 PYQ
The voltage-arc length characteristics of a $$DC$$ arc is given by $$V=20+4L.$$ Where $$L$$ is in $$mm$$. During a welding operation arc length is expected to vary between $$4$$ an...
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