If the section modulus of a beam is increased, the bending stress in the beam will
A. Not change
B. Increase
C. Decrease
D. None of these
Answer: Option C
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Related Questions on Strength of Materials in ME
A. Equal to
B. Less than
C. Greater than
D. None of these
A. $$\frac{{{\text{w}}l}}{6}$$
B. $$\frac{{{\text{w}}l}}{3}$$
C. $${\text{w}}l$$
D. $$\frac{{2{\text{w}}l}}{3}$$
The columns whose slenderness ratio is less than 80, are known as
A. Short columns
B. Long columns
C. Weak columns
D. Medium columns
M/I=E/R=sigma/y
taking.
M/I=sigma/y
Sigma=My/I
So,
Sigma=M/(I/y)
Here I/y is section modules..
So simga that is bending stress is inversely proportional to section modules..
Final conclusion,...
section modulus of a beam is increased, the bending stress in the beam will decrease..