# Structural Mechanics Set 4

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This set of Structural Mechanics Multiple Choice Questions & Answers (MCQs) focuses on Structural Mechanics Set 4

Q1 | The total strain energy stored in a body is termed as
Q2 | Proof resilience per material is known as
Q3 | The stress induced in a body due to suddenly applied load compared to when it is applied gradually is
Q4 | strain energy stored in a body due to suddenly applied load compared towhen it is applied gradually is
Q5 | During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is
Q6 | Tensile strength of a material is obtained by dividing the maximum loadduring the test by the
Q7 | An axial pull of 50 KN is suddenly applied to a steel bar 2 m long and 1000 mm2 in cross-section. If modulus of elasticity is 200 GPa, find strain energy stored in the bar
Q8 | A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is
Q9 | A 10 m long mild steel rail section is fixed at 300 K temperature. If temperature increases by 60 K, find stress in rail section if ends are not yielded. Coefficient of thermal expansion is 12×10-6/K.
Q10 | The ultimate shear stress of a mild steel plate of 10 mm thickness is 350 N/mm2. Calculate the diameter of the hole that can be punched to it without exceeding a compressive stress of 700 N/mm2.
Q11 | A bar 2 m long and 20 mm diameter is subjected to an axial pull of 125.6 KN. Due to this load, length increases by 4 mm and diameter reduce by 0.012 mm. Find Poison?s ratio.
Q12 | A composite section of R.C.C. column 300mm×300mm in section having 20mm diameter 4 bars, one at each corner. Strength of concrete is 5 N/mm2 and modular ratio Es/Ec=9. Calculate load taken by column.
Q13 | The moment of inertia of a triangular section of base 3 unit and height 2 unit, about an axis passing through its base is .
Q14 | Moment of inertia of a square of side 1 unit about an axis through its center of gravity, is .
Q15 | The axis about which moment of area is taken is known as .
Q16 | What is the formula of theorem of parallel axis?
Q17 | Moment of inertia of a circular section of 2 cm diameter, about an axis through its centre of gravity, is .
Q18 | What is the unit of section modulus?
Q19 | What is the formula of theorem of perpendicular axis?
Q20 | What is the unit of moment of inertia?
Q21 | What is the unit of Radius of gyration?
Q22 | What is the formula of radius of gyration?
Q23 | What will be the radius of gyration of a circular plate of diameter 10cm?
Q24 | Moment of inertia of any section about an axis passing through its C.G is
Q25 | The moment of inertia of a triangular section of base „b? and height „h? about an axis passing through its base is ……. times the moment of inertia about an axis passing through its C.G. and parallel to the base