UNIT 3 - Bending Stress

On bending of a beam, which is the layer which is neither elongated nor shortened?

• Axis of load

• Neutral axis

• Center of gravity

• Moment of inertia

The bending stress is ____________

• Directly proportional to the distance of layer from the neutral layer

• Inversely proportional to the distance of layer from the neutral layer

• Directly proportional to the neutral layer

• Does not depend on the distance of layer from the neutral layer

What is the expression of the bending equation?

• M/I = σ/y = E/R

• M/R = σ/y = E/I

• M/y = σ/R = E/I

• M/I = σ/R = E/y

The maximum _________ stresses occur at top most fibre of a simply supported beam.

• Tensile

• Compressive

• Shear

• Bending

At the extreme fibre, bending stress is______

• Minimum

• Zero

• Constant

• Maximum

What is the maximum shear force, when a cantilever beam is loaded with udl throughout?

• w×l

• w

• w/l

• w+l

What is the maximum bending moment for simply supported beam carrying a point load “W” kN at its centre?

• W kNm

• W/m kNm

• W×l kNm

• W×l/4 kNm

what is the maximum BM for the below diagram.

• -54 kNm

• -92 kNm

• -105 kNm

• – 65 kNm

In a simply supported beam subjected to uniformly distributed load (w) over the entire length (l), total load=W, maximum Bending moment is

• Wl/8 or wl2/8 at the mid-point

• Wl/8 or wl2/8 at the end

• Wl/4 or wl2/4

• Wl/2

An axle is subjected to loads as shown

• Wl

• W(l-a)

• Wa

• W(l+a)