GATE 2026 CE (CE1) – Question 30
Two steel plates are to be connected together by a 5 mm fillet weld of length 150 mm to transfer a design load. If the size of the fillet weld used to connect the same two plates is changed to 6 mm, the weld length (in mm) needed for transferring the same design load is ______ (*in integer*).
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Correct answer: 125
Explanation
The strength of a fillet weld is proportional to its throat area, which is proportional to size times length. So $5 \times 150 = 6 \times L$, which gives $L = 125$ mm.