Question 1

The direction of bending stresses is along the&#10;A)Axial direction&#10;B)Lateral direction&#10;C)Inclined direction&#10;D)None

Accepted Answer

Axial direction&#10;

Question 2

Bending stresses in a beam vary&#10;A)Linearly&#10;B)Parabolically&#10;C)Cubic variation&#10;D)None

Accepted Answer

Bending stresses in a beam vary linearly across the section, from maximum compression at one face to maximum tension at the opposite face, according to the bending stress formula derived from the flexure formula.

Question 3

Bending stresses in a beam are of&#10;A)Constant values&#10;B)Variable values&#10;C)Constant nature&#10;D)None

Accepted Answer

Bending stresses in a beam vary along the length and cross-section due to the distribution of loads and reactions, hence they are of variable values.

Question 4

Pure bending of beam will have&#10;A)Tensile and shear stresses&#10;B)Compressive and shear stresses&#10;C)Tensile and compressive stresses&#10;D)None

Accepted Answer

In pure bending, the beam experiences bending moments without the presence of shear forces, leading to tensile and compressive stresses across the beam's cross-section.

Question 5

In a cantilever beam, fibers below the neutral axis are in&#10;A)Tension&#10;B)Shear&#10;C)Compression&#10;D)None

Accepted Answer

In a cantilever beam, fibers below the neutral axis are in compression due to the bending moment causing the beam to bend downwards.

Question 6

In a S.S. beam, fibers below the neutral axis are in&#10;A)Tension&#10;B)Shear&#10;C)Compression&#10;D)None

Accepted Answer

In a simply supported (S.S.) beam, fibers below the neutral axis are in tension because the bottom part of the beam experiences stretching under loading, while the top part is in compression.

Question 7

In a cantilever beam, fibers above the neutral axis are in&#10;A)Tension&#10;B)Shear&#10;C)Compression&#10;D)None

Accepted Answer

In a cantilever beam, fibers above the neutral axis are in tension because they are stretched due to the bending of the beam.

Question 8

Bending occurs due to the application of&#10;A)Load parallel to the axis of the beam&#10;B)Load inclined to the axis&#10;C)Load perpendicular to the axis&#10;D)None

Accepted Answer

Bending in beams is primarily caused by the application of loads perpendicular to the axis of the beam. This perpendicular force creates a bending moment, which is a measure of the bending effect due to the applied load.

Question 9

Bending occurs due to the application of&#10;A)Axial load&#10;B)Lateral load&#10;C)Torsional load&#10;D)None

Accepted Answer

Bending occurs when a lateral load (i.e., a load applied perpendicularly to the length axis of a structural element) is applied, causing the element to bend. Axial loads are applied along the length axis and cause compression or tension, while torsional loads cause twisting.

Question 10

The bending stress is&#10;A)Directly proportional to the distance of layer from the neutral layer&#10;B)Inversely proportional to the distance of layer from the neutral layer&#10;C)Directly proportional to the neutral layer&#10;D)Does not depend on the distance of layer from the neutral layer

Accepted Answer

The bending stress in a beam is directly proportional to the distance of a layer from the neutral axis, according to the bending stress formula σ = My/I, where M is the moment, y is the distance from the neutral axis, I is the moment of inertia, and σ is the bending stress.

Question 11

On bending of a beam, which is the layer which is neither elongated nor shortened?&#10;A)Axis of load&#10;B)Neutral axis&#10;C)Center of gravity&#10;D)None of the mentioned

Accepted Answer

The answer of On bending of a beam, which is...

Deck 7: Understanding Bending Stresses in Beams