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Engineering :: Strength of Materials


181.  A cantilever beam of length / carries a gradually varying load from zero at free end and w per unit length at the fixed end. The maximum deflection oes at
A. free end B. fixed end
C. mid-span

182.  The maximum deflection of a fixed beam carrying a central point load lies at
A. fixed ends B. centre of beam
C. l / 3 from fixed ends D. none of these

183.  The product of Young's modulus (E) and moment of inertia (I) is known as
A. modulus of rigidity B. bulk modulus
C. flexural rigidity D. torsional rigidity

184.  A simply supported beam 'A' of length l, breadth b and depth d carries a central load W. Another beam 'B' of the same dimensions carries a central load equal to 2 W. The deflection of beam 'B' will be
A. one-fourth B. one-half
C. double D. four times

185.  A simply supported beam 'A' of length l, breadth b, and depth d carries a central point load W. Another beam 'B' has the same length and depth but its breadth is doubled. The deflection of beam 'B' will be
A. one-fourth B. one-half
C. double D. four times

186.  A simply supported beam 'A' of length l, breadth b and depth d carried a central point load W. Another bream 'B' has the same length and breadth but its depth is doubled. The deflection of beam 'B' will be double as compared to beam 'A'.
A. Right B. Wrong

187.  The product of the tangential force acting on the shaft and its distance from the axis of the shaft (i.e. radius of shaft) is known as
A. bending moment B. twisting moment
C. torsional rigidity D. flexural rigidity

188.  When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
A. tensile stress B. compressive stress
C. shear stress D. bending stress

189.  The shear stress at the centre of a circular shaft under torsion is
A. zero B. minimum
C. maximum D. infinity

190.  The shear stress at the outermost fibres of a circular shaft under torsion is
A. zero B. minimum
C. maximum D. infinity




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