B.TECH - Semester 3 mechanics of structures Question Paper 2019 (mar)
Practice authentic previous year university questions for better exam preparation.
- In the truss shown in figure determine:
- 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) Calculate the thermal stresses developed in the rails if ...
- 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 the area A from NA. $\mathrm{b}=$ Actual width at ...
- 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 cylindrical shell due to an internal fluid pressure...
- 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" ?
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