The equation of a parabolic arch of span l and rise h, is given by

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The equation of a parabolic arch of span l and rise h, is given by
Options
A.
B.
C.
D.

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5. Pick up the correct statement from the following:
Options
A. The moment of inertia is calculated about the axis about which bending takes place
B. If tensile stress is less than axial stress, the section experiences compressive stress
C. If tensile stress is equal to axial stress, the section experiences compressive stress
D. If tensile stress is more than axial stress, some portion of the section experiences a tensile stress
E. All the above.

6. Keeping breadth constant, depth of a cantilever of length l of uniform strength loaded with uniformly distributed load w varies from zero at the free end and
Options
A. at the fixed end
B.
C.
D. at the fixed end

8. A close coil helical spring when subjected to a moment M having its axis along the axis of the helix
Options
A. it is subjected to pure bending
B. its mean diameter will decrease
C. its number of coils will increase
D. all the above.

10. Maximum strain theory for the failure of a material at the elastic limit, is known as
Options
A. Guest's or Trecas' theory
B. St. Venant's theory
C. Rankine's theory
D. Haig's theory
E. Von Mises's theory.

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