Strength of material
Previous year question paper with solutions for Strength of material
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- A 1.5 m long circular rod tapers uniformly from 40 mm diameter at one end to 20 mm diameter at the other end. Find the axial strain in the bar if it is subjected to an axial load of 200 kN. Take E = 200 GPa
- If, for a two dimensional element, one the principal stresses is zero, find out the relationship between the other principal stress and maximum shear stress.
- Find the second moment of area about an axis passing through the base of a right triangle, if its base length is 300 mm and its hypotenuse is 500 mm.
- What do you understand by the term ‘section modulus’?
- What do you understand by the terms ‘point of contraflexure’ and ‘point of maximum bending moment’?
- What is the difference between a strut and a column?
- What would be the ratio of the maximum shear stress developed in a hollow and a solid shaft, both subjected to same torque, made of same material, and having same length and weight. Given the ratio of outer to inner diameter of hollow shaft as 2
- What are flitched beams? Explain briefly.
- Briefly explain the maximum shear strain energy or distortion energy theory.
- Briefly explain the concept of strain hardening as applicable to ductile materials
- What is the difference between Engineering and True Stress Strain curve?
- Derive the Torsion Equation.
- Differentiate between homogeneity and isotropy
- Differentiate between polar modulus and section modulus.
- What is the difference between cylindrical and spherical shells?
- Define thermal stress and thermal strain
- Explain the effect of change in temperature for a composite bar.
- Distinguish between centre of gravity and centroid.
- What is meant by point of contraflexture in bending of beams?
- Discuss the failure for long and short columns.
- Define Hook's law
- A simply supported beam of uniform cross-section is subjected to a maximum bending moment of 30KN.m. If its cross-section is a hollow tube with outer diameter 40mm and inner diameter 30mm. find the values of maximum bending stress
- Write the relationship between E, G and K.
- If σR x= σR y and λxy = 0, then what is the center and radius of the Mohr's circle?
- Briefly explain the maximum principal stress theory of failure
- If an element is subjected to pure shearing stress of 30MPa, then find the value of maximum principal stress.
- What is the slenderness ratio of a column having one end fixed and the other hinged if its length is lm and diameter 20mm?
- Write the formula for the change in volume of a thin cylindrical pressure vessel subjected to internal pressure.