Question

Cold-cracking in steel weldments depends on                                 

(1) Carbon equivalent

(2) Heat input

(3) Effective thickness

(4) Hydrogen content in weld pool

(a) 1, 2 and 3 only          (b) 1, 2 and 4 only

(c) 2, 3 and 4 only          (d) 1, 2, 3 and 4