Civil Engineering MCQs

Page No. 209

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if______________?


a the floor is smooth, the wall is rough


bthe floor is rough, the wall is smooth


cthe floor and wall both are smooth surfaces


dthe floor and wall both are rough sur-faces



Two coplanar couples having equal and op-posite moments_________________?


a balance each other


b produce a couple and an unbalanced force


care equivalent


dcan not balance each other



The product of either force of couple with the arm of the couple is called________________?


aresultant couple


bmoment of the forces


c resulting couple


dmoment of the couple


View Answer moment of the couple

The center of gravity of a uniform lamina lies at_______________?


athe center of heavy portion


b the bottom surface


cthe mid point of its axis


dall of the above



Center of percussion is______________?


athe point of C.G.


bthe point of metacentre


cthe point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis


dpoint of suspension



The units of moment of inertia of an area are_______________?


akg m2


bm4


ckg/m2


dm3


View Answer m4

The center of gravity of a triangle lies at the point of__________________?


aconcurrence of the medians


bintersection of its altitudes


cintersection of bisector of angles


dintersection of diagonals



The possible loading in various members of framed structures are_______________?


acompression or tension


b buckling or shear


cshear or tension


d all of the above



A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span________________?


a 2.5 cm


b3.0 cm


c4.0 cm


d5.0 cm


View Answer 4.0 cm

Pick up the incorrect statement from the following _______________?


aThe C.G. of a circle is at its center


b The C.G. of a triangle is at the intersection of its medians


cThe C.G. of a rectangle is at the inter-section of its diagonals


dThe C.G. of a semicircle is at a distance of r/2 from the center



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