# Civil Engineering - Theory of Structures

### Exercise :: Theory of Structures - Section 1

6.

A material which obeys Hook's law, is subjected to direct stress σ0. At its elastic limit, the following statement is true,

 A. Strain is equal to B. Maximum shear stress = C. Strain energy = D. Shear strain energy = E. All the above.

Answer: Option E

Explanation:

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7.

In the truss shown in the given figure, the force in member BC is A. 100 t compressive B. 100 t tensile C. zero D. indeterminate

Answer: Option C

Explanation:

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8.

A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is

 A. π B. C. D. Answer: Option B

Explanation:

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9.

Stress may be defined as

 A. force per unit length B. force per unit volume C. force per unit area D. none of these.

Answer: Option C

Explanation:

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10.

Total strain energy theory for the failure of a material at elastic limit, is known

 A. Guest's or Trecas' theory B. St. Venant's theory C. Rankine's theory D. Haig's theory E. Von Mises's theory.

Answer: Option D

Explanation:

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