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

Answer: Option E

Explanation:

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22. 

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

A.
B.
C.
D.

Answer: Option 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. 2.0
E. 2.5

Answer: Option C

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.

Answer: Option D

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.

Answer: Option A

Explanation:

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