B.TECH - Semester 3 mechanics of structures Question Paper 2019 (mar)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- 302 : MECHANICS OF STRUCTURES (C) Time : 3 Hours Max. Marks : 100 PART- A Answer all questions. Each question carries $\mathbf{4}$ marks.
- Define stress, strain, Modulus of Elasticity and Poisson's ratio.
- Briefly explain Shear centre and Shear flow.
- Show that for a rectangular section of the maximum shear stress is 1.5 times the average stress.
- What is meant by "Kernel of section" ?
- Prove that the maximum strain energy stored in a body is given by $U=\frac{\sigma^{2}}{2 E}$ Volume Where $\sigma=$ Stress at the elastic limit. PART - B Answer one full question from each Module. Each question carries 20 marks. MODULE - I
- A bar 3 cm in diameter was subjected to tensile load 54 kN and the measured extension on 30 cm length was 0.112 mm and change in diameter was 0.00366 mm . Calculate Poisson's ratio and the value of three modulus.
- A steel rail is 12.6 m long and is laid at a temperature of $24^{\circ} \mathrm{C}$. The maximum temperature is $44^{\circ} \mathrm{C}$. i) Estimate the minimum gap between two rails to be left so that temperature stresses do not develop. ii) Calcula...
- Draw SF and BM diagram for the beam loaded as shown in below figure.
- For a given stress compare the moment of resistance of a square section beam when placed
- Prove that the shear stress at any point in the cross section of a beam which is subjected to a shear force $F$, is given by $$ \tau=F \times \frac{A y}{b \times l} $$ Where $\mathrm{A}=$ Area of section above the fiber, $y=$ Distance of the CG of ...
- In the truss shown in figure determine:
- A cylindrical vessel, whose ends are closed by means of rigid flange plates, is made of steel plate 3 mm thick. The length and the internal diameter of the vessel are 50 cm and 25 cm respectively. Determine the longitudinal and hoop stresses in the c...