railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Resistance spot welding is performed on two plates of 1.5 mm thickness with 6 mm diameter electrode using 15000 A current for a time duration of 0.25 seconds. Assuming the interface resistance to be 0.0001 Ω, the heat generated to form the weld is
1
33750 W-sec
2
8437 W-sec
3
22500 W-sec
4
5625 W-sec