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This mock test of Test: Theory of Columns - 2 for Civil Engineering (CE) helps you for every Civil Engineering (CE) entrance exam.
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QUESTION: 1

The rectangular column shown in the figure below carries a load P having eccentricities ‘e_{x}’ and ' e_{y} ’ along the x-axis and y-axis respectively. The stress at any point (*, y) is given by

Solution:

Stress at any point

QUESTION: 2

Euler’s formula for a mild steel long column hinged at both end is not valid for slenderness ratio

Solution:

According to Euler's theory,

For a mild steel coumn,

σ_{y} = 300 N/mm2 and

E = 2.1 x 10^{5
∴}

Hence, when the slenderness ratio is less than this limit for mild steel columns , Euler’s formula will not be valid.

QUESTION: 3

The buckling load for a column pinned at both ends is 10kN. If the ends are fixed, the buckling load changes to

Solution:

For both ends pinned,

= 4 x 10 = 40kN

QUESTION: 4

The radius of gyration of a rectangular section (depth d, width b) from a centroidal axis parallel to the width is

Solution:

Radius of gyration,

QUESTION: 5

For no tension in column of diameter D, the eccentricity of the compressive load must be less than

Solution:

For no tension condition,

QUESTION: 6

The Rankine constant in the formula for axial loads on column made of material of crushing strength f_{c} and modulus of elasticity E is

Solution:

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