Question

For a beam of triangular cross-section, the ratio of maximum shear stress to shear stress at neutral axis is

• A. 1.33
• B. 1.5
• C. 1.13
• D. 1.0

Answer 1

The correct option is C 1.13

We know that ,

and ${\tau }_{max}=1.5{\tau }_{avg}$

${\tau }_{{}_{NA}}=1.33{\tau }_{avg}$

$\frac{{\tau }_{max}}{{\tau }_{{}_{NA}}}=\frac{1.5}{1.33}=1.125\simeq 1.13$