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.
Correct Answer
l = 2a
Strength of Materials problems
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1. Pick up the correct statement from the following :
Options
A. The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance
B. In visco-elastic material, stress-strain relation is dependent on time
C. An instropic material has different properties is different directions
D. An orthotropic material has different properties in three mutually perpendicular directions
2. A cantilever carries is uniformly distributed load W over its whole length and a force W acts at its free end upward. The net deflection of the free end will be
3. A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called
7. 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
8. In a simply supported beam L with a triangular load W varying from zero at one end to the maximum value at the other end, the maximum bending moment is
Correct Answer: (stress)2 x volume of the member + Young's modulus E.
10. 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