Strength of materials-1
Previous year question paper with solutions for Strength of materials-1
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- Differentiate between primary strain and secondary strain.
- State the assumptions for evaluating shear stress in a circular shaft subjected to twist.
- Define principal planes and principal stresses.
- Define thermal stress and thermal strain.
- Explain the effect of change in temperature for a composite bar.
- 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.
- Discuss the failure for long and short columns.
- Find the ratio of second moment of area about the centroidal axis to the second moment of area about the base of a triangle with base : 200 mm and altitude : 600 mm.
- A beam of square section with side ‘a’ is used with its diagonal horizontal. Find the section modulus of the beam.
- A solid circular shaft is subjected to a bending moment M and torque T. What is the ratio of maximum bending stress to maximum shear stress in the shaft?
- What are the assumptions made in simple theory of bending?
- What are the shapes of bending moment diagrams in case of : i) Uniformly distributed load, ii) a couple altered at any point of a beam.
- What is the ratio of the torques transmitted by a hollow and a solid shaft of the same material, length and weight?
- Differentiate between the behaviour of a short column and a long column when subjected to axial load.
- Briefly explain moment area method.
- Why is the longitudinal stress in a thin cylinder zero?
- What do you understand by 0.2% proof stress?
- What is statically indeterminate problem?
- Explain the difference between ‘primary strain’ and ‘secondary strain’.
- How do we graphically represent the principal stresses and planes in 2-D system of stresses?
- What do you understand by ‘point of contraflexure’. Does it exist in a cantilever?
- State the assumptions made in the theory of simple bending.
- State Mohr’s theorem-I as applicable to deflection of beams.
- Differentiate between moment of inertia and polar moment of inertia. Which one is used in case of torsion of shafts?
- Find the strength of shaft of 25 mm dia having max. shear stress value of 460 MPa.
- Differentiate between crushing, buckling and compression.
- What do you understand by the terms ‘column’ and ‘strut’.