Civil Engineering MCQs

Page No. 215

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve___________________?


acatenary


bparabola


chyperbola


delliptical


View Answer parabola

The units of moment of inertia of mass are_____________________?


akg m2


bm4


ckg/m2


dkg/m


View Answer kg m2

Center of gravity of a thin hollow cone lies on the axis at a height of________________?


aone-fourth of the total height above base


bone-third of the total height above base


cone-half of the total height above base


d three-eighth of the total height above the base



Center of gravity of a solid cone lies on the axis at the height_______________?


aone-fourth of the total height above base


bone-third of the total height above base


cone-half of the total height above base


dthree-eighth of the total height above the base



In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than___________________?


a two members with unknown forces of the frame


bthree members with unknown forces of the frame


c four members with unknown forces of the frame


dthree members with known forces of the frame



A framed structure is perfect if it contains members equal to________________?


a2n-3


bn-l


c2n-l


dn – 2


View Answer 2n-3

According to Lami’s theorem________________?


athree forces acting at a point will be in equilibrium


bthree forces acting at a point can be represented by a triangle, each side being proportional to force


cif three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium


d if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two



D’ Alembert’s principle is used for___________________?


a reducing the problem of kinetics to equivalent statics problem


bdetermining stresses in the truss


cstability of floating bodies


d designing safe structures



Which of the following is not a vector quantity_______________?


aweight


bvelocity


cacceleration


dforce


View Answer weight

A number of forces acting at a point will be in equilibrium if_________________?


a their total sum is zero


btwo resolved parts in two directions at right angles are equal


csum of resolved parts in any two per-pendicular directions are both zero


dall of them are inclined equally



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