Allied & ICAR Exam Bank • ALLIED_1085 NAT • 2 Marks

Section 2: Farm Machinery

Machine Design

Subtopic: Welded Joints

Question Statement:

A transverse fillet weld of leg size $s = 10\text{ mm}$ has a throat thickness $t = s \cos(45^\circ) = 0.707 s = 7.07\text{ mm}$. If the length of the weld is $100\text{ mm}$ and the permissible shear stress is $80\text{ MPa}$, the maximum tensile load $P$ (in kN) the weld can carry is:

Answer Key:

56.6

Step-by-Step Solution & Explanation

Throat area $A_t = t \times L = 7.07\text{ mm} \times 100\text{ mm} = 707\text{ mm}^2$. Safe load $P = \tau_{perm} \times A_t = 80\text{ N/mm}^2 \times 707\text{ mm}^2 = 56,560\text{ N} \approx 56.56\text{ kN}$.
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