If the width b and depth d of a beam simply supported with a central load are in

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Question
If the width b and depth d of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of
Options
A. b/d
B. d/b
C. (d/b)²
D. (b/d)²
E. (b/d)³.

Correct Answer

(b/d)²

Strength of Materials problems

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1. Strain energy of a member may be equated to
Options
A. average resistance x displacement
B. stress x strain x area of its cross-section
C. stress x strain x volume of the member
D. (stress)² x volume of the member + Young's modulus E.

3. If a member is subjected to a tensile force P, having its normal cross-section A, the resulting shear stress in an oblique plane inclined at an angle ? to its transverse plane, is
Options
A.
B.
C.
D.
E.

4. The principal stresses at a point are 100, 100 and-200 kgf/cm², the octo hedral shear stress at the point is :
Options
A. 100 2 kg/cm²
B. 200 2 kg/cm²
C. 300 2 kg/cm²
D. 400 2 kg/cm²
E. 500 2 kg/cm².

5. In a simply supported beam (l + 2a) with equal overhangs (a) and carrying a uniformly distributed load over its entire length, B.M. at the middle point of the beam will be zero if
Options
A. l = 2a
B. l = 4a
C. l < 2a
D. l > a
E. l > 3a.

8. Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to
Options
A. very long columns
B. long columns
C. short columns
D. intermediate columns
E. all the above.

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