Hydraulics and Fluid Mechanics Online Test – Multiple Choice Questions and Answers 1. When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress equal to one-half twice two-third 2. When a bar of length l, width b and thickness t is subjected to a pull of P, its length, width and thickness increases length decreases, width and thickness increases length increases, width and thickness decreases length, width and thickness decreases 3. The rectangular beam ‘A’ has length l, width b and depth d. Another beam ‘B’ has the same length and width but depth is double that of ‘A’. The elastic strength of beam B will be __________ as compared to beam A four times double same six times 4. 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 torsional rigidity bending moment twisting moment flexural rigidity 5. When the shear force diagram is a parabolic curve between two points, it indicates that there is a uniformly distributed load between the two points uniformly varying load between the two points point load at the two points no loading between the two points 6. A column with maximum equivalent length has both ends fixed one end fixed and the other end hinged one end fixed and the other end free both ends hinged 7. The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length half two-third one-third equal to 8. 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 __________ as that of beam ‘A’ one-fourth one-half double four times 9. When a cantilever beam is loaded at its free end, the maximum compressive stress shall develop at bottom fibre top fibre centre of gravity neutral axis 10. The unit of modulus of elasticity is same as those of stress, pressure and modulus of rigidity stress, force and modulus of rigidity strain, force and pressure stress, strain and pressure Loading … Question 1 of 10
