Strength of Material Booster Quiz-3

A simply supported beam of length 3 m is subjected to a uniformly distributed load of 1.5 kN/m. If the cross-section of the beam is rectangular with 100 mm (width) × 150 mm (depth), the maximum shear stress would be :

The slenderness ratio of lacing bar should be less than:

If E, N, K and 1/m are modulus of elasticity, modulus of rigidity, Bulk modulus and Poisson ratio of the material, the following relationship holds good:

Euler’s crippling load formula gives buckling load of long columns that is the ultimate load a column can take. Mathematically Euler’s formula can be expressed as

(Where,

P = Buckling load

E = Modulus of Elasticity of material

I = Moment of Inertia of column section

L = Equivalent/Effective length of column)

If a solid shaft is subjected to a torque (T) at its end such that maximum shear stress does not exceed f_s’ the diameter of the shaft will be:

If the load on a column is increased to a value that on its removal the deflection remains, the load is known as:

Two rods of different materials having coefficient of linear expansion , and Young’s moduli E₁, E₂ respectively are fixed between to massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If :=2:3, the thermal stresses are equal, what is the ratio of E₁ to E₂ ?

Bending moment M and torque T are applied on a solid circular shaft. If the maximum bending stress is equal to the maximum shear stress developed, M is equal to:

A prismatic beam simply supported carries a concentrated load W at mid-span. If the same beam is fixed at its ends, what load at mid-span can produce the same deflection at mid-span?

A electric pole 5 m high is fixed into the foundation. It carries a wire at the top and is free to move sideways. The effective length of the pole is