Civil Engineering MCQs

Page No. 205

In the truss shown in given figure the force in member DC is________________?


a100 t compressive


b100 t tensile


cZero


dIndeterminate


View Answer Zero

A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is________________?


aL/d


b L/2d


c(L/2d)²


d(L/3d)²


View Answer (L/2d)²

The strain energy due to volumetric strain________________?


a Is directly proportional to the volume


b Is directly proportional to the square of exerted pressure


cIs inversely proportional to Bulk modulus


dAll the above


View Answer All the above

The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called______________?


aStiffness


b Proof resilience


c Proof stress


dProof load


View Answer Proof resilience

A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is_____________?


a25 N


b30 N


c 35 N


d40 N


View Answer 35 N

The forces acting normally on the cross section of a bar shown in the given figure introduce_______________?


aCompressive stress


bTensile stress


cShear stress


dNone of these


View Answer Compressive stress

The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is_________________?


awl3/3EI


b wl4/3EI


cwl4/8EI


dwl4/12EI


View Answer wl4/8EI

A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is________________?


a4.0 mm


b4.5 mm


c 5.0 mm


d5.5 mm


View Answer 5.0 mm

A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is______________?


a /6


b/2


c /3


d /4


View Answer /2

The assumption in the theory of bending of beams is_________________?


a Material is homogeneous


bMaterial is isotropic


cYoung’s modulus is same in tension as well as in compression


dAll the above


View Answer All the above

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