Strength of Materials MCQs for placement tests

Stress is defined as:

Strain is:

Hooke's law states that, within the elastic limit, stress is proportional to:

A steel rod of area 100 mm² carries a load of 20 kN. The stress is:

Poisson's ratio is the ratio of:

The value of Poisson's ratio for most metals is about:

For a simply supported beam with a central point load W and span L, the maximum bending moment is:

For a simply supported beam with a uniformly distributed load w per metre over span L, the maximum bending moment is:

For a cantilever of length L with a point load W at the free end, the maximum bending moment is:

Bending stress in a beam is maximum at:

The section modulus Z is equal to:

The moment of inertia of a rectangular section of width b and depth d about its centroidal axis parallel to b is:

Shear force is zero at a section where the bending moment is:

The point where the bending moment changes sign is called:

For a solid circular shaft, the polar moment of inertia is:

Euler's formula for buckling applies to:

The effective length of a column fixed at both ends is:

The effective length of a column fixed at one end and free at the other is:

The ratio of ultimate stress to working stress is called the:

A thin cylinder under internal pressure p (diameter d, thickness t) has hoop stress: