Civil Engineering MCQs

Page No. 208

Maximum principal stress theory for the failure of a material at elastic point, is known________________?


aGuest’s or Trecas’ theory


bSt. Venant’s theory


cRankine’s theory


dVon Mises’ theory


View Answer Rankine’s theory

The unit of work or energy in S.I. units is________________?


anewton


bpascal


c kilogram meter


djoule


View Answer joule

Which of the following is not the unit of pressure ?


akg/cm


bata


catmosphere


dnewton


View Answer newton

The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?


acoplanar non-concurrent forces


b non-coplanar concurrent forces


cnon-coplanar non-concurrent forces


dintersecting forces



Which of the following is not a scalar quantity__________________?


atime


bmass


cvolume


dacceleration


View Answer acceleration

The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are____________________?


a 2 and V6


b3 and 1 kg


cV5andV5


d2 and 5


View Answer V5andV5

Two non-collinear parallel equal forces acting in opposite direction________________?


abalance each other


bconstitute a moment


cconstitute a couple


dconstitute a moment of couple


View Answer constitute a couple

According to law of triangle of forces______________?


athree forces acting at a point will be in equilibrium


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


c if three forces acting upon a patticle 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



According to principle of moments_________________?


aif a system of coplanar forces is in equilibrium, then their algebraic sum is zero


b if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero


c the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point


dpositive and negative couples can be balanced



If a rigid body is in equilibrium under the action of three forces, then_______________?


athese forces are equal


bthe lines of action of these forces meet in a point


c the lines of action of these forces are parallel


dB. and C. above


View Answer B. and C. above

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