When a rectangular bar of length $$l$$, breadth b and thickness t is subjected to an axial pull of P, then linear strain ($$\varepsilon $$) is given by (where E = Modulus of elasticity)
A. $$\varepsilon = \frac{{\text{P}}}{{{\text{btE}}}}$$
B. $$\varepsilon = \frac{{{\text{btE}}}}{{\text{P}}}$$
C. $$\varepsilon = \frac{{{\text{bt}}}}{{{\text{PE}}}}$$
D. $$\varepsilon = \frac{{{\text{PE}}}}{{{\text{bt}}}}$$
Answer: Option A
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
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