Strength of Materials

The ratio of stress and strain is known as

• Modulus of elasticity

• Young's modulus

• Both a. and b.

• None of the above

The actual breaking stress in stress-strain diagram is the ratio of

• load at breaking point and original cross-sectional area

• load at breaking point and reduced cross-sectional area

• maximum load and original cross-sectional area

• yield load and original cross-sectional area

A rigid body has Poisson's ratio equal to

• 0

• 1

• less than 1

• greater than one

Two parallel, equal and opposite forces acting tangentially to the surface of the body is called as

• Complementary stress

• Compressive stress

• Shear stress

• Tensile stress

Which stress is induced in a member, when expansion or contraction due to temperature variation is prevented?

• Compressive stress

• Tensile stress

• Thermal stress

• None of the above

The thermal stress induced in a steel rod is compressive, if temperature

• decreases

• increases

• remains constant

• none of the above

The deformation of a material caused due temperature variation develops

• stress

• strain

• both a. and b.

• none of the above

The beam having one end free and one end fixed is called as

• Cantilever beam

• Continuous beam

• Overhang beam

• Simply supported beam

In bending moment diagram, if no load acts between two sections, then it is represented by

• horizontal line

• inclined line

• vertical line

• all of the above

What is the S.I. unit of sectional modulus?

• mm⁴

• mm³

• mm²

• m