Strength of Materials II

Resilience can also be termed as ___________

• Stress energy

• Strain energy

• Modulus

• Tenacity

Mathematically, strain energy = _________

• Power

• Work done

• Young’s Modulus

• Energy

Calculate the Strain energy stored in a body of stress 0.0366 N/mm2. The cross sectional area is 60 m2and length of body is 1 m. Take E = 2×10⁵ N/mm².

• 0.2009 N.mm

• 0.0416 N.mm

• 0.0987 N.mm

• 0.1316 N.mm

What is the strain energy stored in a body due to gradually applied load?

• σE/V

• σE²/V

• σV²/E

• σV²/2E

Maxwell’s reciprocal theorem is applicable for elastic materials only.

• True

• False

Maxwell’s reciprocal theorem is applicable for only prismatic members.

• True

• False

Identify the incorrect statement from the following regarding applicability of Maxwell’s reciprocal theorem.

• It is applicable for elastic member’s only

• The temperature must remain constant throughout

• Supports of the member should be unyielding

• It is applicable for prismatic member only

The beam shown in the figure carries loads of 20kN and 40kN at point C and D respectively and produces a deflection of 6mm at point E. To produce a deflection of 8mm and 5mm at C and D respectively, the load required at E would be ______

• 20kN

• 40kN

• 50kN

• 60kN

Betti’s Theorem is based on ______

• Balancing of external and internal forces

• Balancing of work done produced by external and internal loadings

• Balancing of external and internal moments

• Balancing of strain energy produced by external and internal loadings

The principle of virtual work can be applied to elastic system by considering the virtual work of_________________?

• internal forces only

• external forces only

• internal as well as external forces

• none of the above