Concept drill
optimum arc length
GATE Mechanical Engineering · Joining · 1989-2003
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All concepts →2003 PYQ
The arc - voltage characteristics of a $$DC$$ power source has a linear power source characteristic of $$V=20+40L,$$ where $$V$$ is the arc voltage in volts and $$L$$ is the arc le...
medium
1989 PYQ
An arc welding $$DC$$ power source has a linear power source characteristic with open circuit voltage $${V_O} = \,\,80$$ volts and short circuit current $${{\rm I}_S} = 1000amps.$$...
medium