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 $$\varepsilon = \frac{{{\text{PE}}}}{{{\text{bt}}}}$$

Correct Answer: $$\varepsilon = \frac{{\text{P}}}{{{\text{btE}}}}$$

Bissoy MCQ
#Mechanical Engineering #Strength Of Materials In ME

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