# Civil Engineering - Theory of Structures

### Exercise :: Theory of Structures - Section 4

21.

For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is

 A. 0.303 B. 0.404 C. 0.505 D. 0.606 E. 0.707

Explanation:

No answer description available for this question. Let us discuss.

22.

The moment of inertia of a circular section about any diameter D, is

 A. B. C. D. Explanation:

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23.

The ratio of maximum and average shear stresses on a rectangular section, is

 A. 1 B. 1.25 C. 1.5 D. 2 E. 2.5

Explanation:

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24.

The locus of the moment of inertia about inclined axes to the principal axis, is

 A. straight line B. parabola C. circle D. ellipse.

Explanation:

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25.

A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

 A. B. C. D. 