Civil Strength of Material Part-3

Test Preparation on Civil Strength of Material Part-3

1.

According to Lami's theorem

1Three forces acting at a point will be in equilibrium
2Three forces acting at a point can be represented by a triangle, each side being proportionalto force
3If three forces acting upon a particle are represented in magnitude and direction by thesides of a triangle, taken in order, they will be in equilibrium
4If three forces acting at a point are in equilibrium, each force is proportional to the sine ofthe angle between the other two

2.

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

1Their total sum is zero
2Two resolved parts in two directions at right angles are equal
3Sum of resolved parts in any two perpendicular directions are both zero
4All of them are inclined equally

3.

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

1Concurrence of the medians
2Intersection of its altitudes
3Intersection of bisector of angles
4Intersection of diagonals

4.

Angle of friction is the

1Angle between normal reaction and the resultant of normal reaction and the limiting friction
2Ratio of limiting friction and normal reaction
3The ratio of minimum friction force to the friction force acting when the body is just aboutto move
4The ratio of minimum friction force to friction force acting when the body is in motion

5.

Limiting force of friction is the

1Tangent of angle between normal reaction and the resultant of normal reaction and limitingfriction
2Ratio of limiting friction and normal reaction
3The friction force acting when the body is just about to move
4The friction force acting when the body is in motion

6.

The necessary condition for forces to be in equilibrium is that these should be

1Coplanar
2Meet at one point
3Both 1 and 2
4All be equal

7.

Which of the following is the example of lever of first order?

1Arm of man
2Pair of scissors
3Pair of clinical tongs
4All of the above

8.

A cable with a uniformly distributed load per horizontal metre run will take the following shape

1Straight line
2Parabola
3Hyperbola
4Elliptical

9.

In determining stresses in frames by methods of sections, the frame is divided into two parts by animaginary section drawn in such a way as not to cut more than

1Two members with unknown forces of the frame
2Three members with unknown forces of the frame
3Four members with unknown forces of the frame
4Three members with known forces of the frame

10.

According to principle of transmissibility of forces, the effect of a force upon a body is

1Maximum when it acts at the center of gravity of a body
2Different at different points in its line of action
3The same at every point in its line of action
4Minimum when it acts at the C.G. of the body

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