# Mechanical Engineering - Strength of Materials

Exercise : Strength of Materials - Section 8

1.

A pressure vessel is said to be a thin shell when the ratio of wall thickness of the vessel to its diameter is __________ 1/10.

2.

According to Euler's column theory, the crippling load of a column is given by

*p*= π^{2}*EI*/*Cl*^{2}. In the Euler's formula, the value of*C*for a column with one end fixed and the other end hinged, is 1/2.3.

A tensile test is performed on a mild steel round bar. Its diameter after fracture will

4.

Two closely coiled helical springs '

*A*' and '*B*' are equal in all respects but the diameter of wire of spring '*A*' is double that of spring '*B*' The stiffness of spring '*B*' will be __________ that of spring '*A*'5.

When a closely-coiled helical spring of mean diameter (

*D*) is subjected to an axial load (*W*), the stiffness of the spring is given byQuick links

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