GATE Papers >> Mechanical >> 2012 >> Question No 39

Question No. 39 Mechanical | GATE 2012

In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20 + 5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. The arc current was varied from 400 A to 500 A. Assuming linear power source characteristic, the open circuit voltage and the short circuit current for the welding operation are

Answer : (C) 95 V, 950 A

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