engineering recuitment HPCL Engineer Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20 + 5L where the arc length I 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 short circuit current for the welding operation are:
1
45 V, 450 A
2
75 V, 550 A
3
95 V, 950 A
4
150 V, 1500 A