Civil Engineering - Theory of Structures
Exercise :: Theory of Structures - Section 3
| 16. |
The forces acting on the bar as shown in the given figure introduce
 |
| A. |
compressive stress | | B. |
tensile stress | | C. |
shear stress | | D. |
none of these. |
Answer: Option C
Explanation:
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| 17. |
The equation of a parabolic arch of span l and rise h, is given by |
Answer: Option D
Explanation:
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| 18. |
Pick up the correct statement from the following: |
| A. |
A wire wound in spiral form, is called a helical spring | | B. |
The pitch of a close coil spring, is very small | | C. |
The angle made by the coil with horizontal, is called the angle of helix | | D. |
In the open coil helical spring, the angle of helix is comparatively large | | E. |
All the above. |
Answer: Option E
Explanation:
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| 19. |
The horizontal thrust on the ends of a two hinged semicircular arch of radius R carrying |
| A. |
a uniformly distributed load ω per unit run over its right half span, is  | | B. |
a uniformly distributed load ω per unit run over its entire span is  | | C. |
a distributed load varying from zero at the left end to ω per unit horizontal run at the right end, is | | D. |
all the above. |
Answer: Option D
Explanation:
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| 20. |
Maximum principal stress theory for the failure of a material at elastic point, 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 C
Explanation:
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