Civil Engineering - Theory of Structures

Exercise :: Theory of Structures - Section 4
1.
In case of principal axes of a section

A.
sum of moment of inertia is zero B.
difference of moment inertia is zero C.
product of moment of inertia is zero D.
none of these.

Answer: Option C

Explanation:

2.
The forces acting normally on the cross section of a bar shown in the given figure introduce

A.
compressive stress B.
tensile stress C.
shear stress D.
none of these.

Answer: Option B

Explanation:

3.
The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI , is

Answer: Option D

Explanation:

4.
If the normal stresses due to longitudinal and transverse loads on a bar are σ_{1} and σ_{2} respectively, the tangential component of the stress on an inclined plane through θ°, the longitudinal load is

A.
σ_{1} sin θ + σ_{2} cos θ B.
σ_{1} sin θ^{2} + σ_{2} cos^{2} θ C.
D.

Answer: Option C

Explanation:

5.
The ratio of the section modulus of a square section of side B and that of a circular section of diameter D , is

Answer: Option B

Explanation: