railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
A resistance spot-welding operation is performed on two pieces of 1.5-mm-thick sheet steel using 12,000 A for a 0.20 s duration.
The electrodes are 6 mm in diameter at the contacting surfaces. Resistance is assumed to be 0.0001 ohm. Calculate the heat generated in the process.
1
28 Joules
2
2880 Joules
3
28800 Joules
4
288 Joules