# MOS/Imp questions on Solid mechanics for civil or mechanical engineering aspirants-Part 02

1) A reinforced concrete beam is assumed to be made of

A. homogeneous material

B. heterogeneous material

C. isotropic material

D. none of these.

2) The radius of gyration of a rectangular section is not proportional to

A.square root of the moment of inertia

B.square root of the inverse of the area

C.square root of the moment of inertia divided by area of the section

D. none of these.

3) The radius of gyration of a rectangular section is not proportional to

A. square root of the moment of inertia

B. square root of the inverse of the area

C. square root of the moment of inertia divided by area of the section

D. none of these.

4) Pick up the correct statement from the following :

A. A ductile material has a large plastic zone

B. A brittle material has no plastic zone

C. A rigid material has no plastic zone

D. All the above.

5) The number of points of contra flexure in a simply supported beam carrying uniformly distributed load is

A. 1

B. 2

C. 3

D. 0

6)The maximum bending moment due to a moving load on a simply supported beam occurs

A. at the mid-span

B. at the supports

D. anywhere on the beam

E. none of these.

7) If a three hinged parabolic arch carries a uniformly distributed load on its entire span, every section of the arch resists.

A. compressive force

B. tensile force

C. shear force

D. bending moment.

8) In a three-hinged arch, the shear force is usually

A. maximum at the crown

B. maximum at springings

C. maximum at quarter points

D. varies with slope.

9) An arch may be subjected to

A. shear and axial force

B. bending moment and shear force

C. bending moment and axial force

D. shear force and thrust

E. thrust, shear force, and bending moment.

10) The law which states, "within elastic limits strain produced is proportional to the stress-producing it", is known as

A. Bernoulli's law

B. Stress law

C. Hooke's law

D. Poisson's law

E. none of these.

11) A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end. If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of

A. 8

B. 1/8

C. 1/2

D. 2

E. 3

12) The phenomenon of slow extension of materials having a constant load, i.e. increasing with the time is called

A. creeping

B. yielding

C. breaking

D. none of these.

13) The maximum resistance against rotation is offered by the weld at a point

A. most distant

B. least distant

C. at either end

D. centrally located.

14) For structural analysis of forces, the method refers to

A. moment-area-theorem

B. three-moment equation

C. Maxwell's reciprocal theorem

D. none of these.

15) The reaction at the supports will be vertical to the plane of the support if the frame structure rests on

A. roller supports

B. free supports

C. hinged supports

D. all the above.

16) A cylinder is said to be thin if the ratio of its thickness and diameter, is less than

A. 1/25

B. 1/20

C. 1/15

D. 1/10

E. 1/5

17) Stress in members of statically determinate simple frames can be determined by

A. method of joints

B. method of sections

C. graphical solution

D. all the above.

18) An arch with three hinges is a structure

A. statically determinate

B. statically indeterminate

C. geometrically unstable

D. structurally sound but indeterminate

E. none of these.

19) The shear force on a simply supported beam is proportional to

A. displacement of the neutral axis

B. sum of the forces

C. sum of the transverse forces

D. algebraic sum of the transverse forces of the section

E. curvature of the neutral axis.

20) In rectangular columns (cross-section b x h), the core is a

A. rectangle of lengths b/2 and h/2

B. square of length b/2

C. rhombus of length h/2

D. rhombus of diagonals b/3 and h/3

E. none of these.

21) A cantilever carrying a uniformly distributed load W over its full length is propped at its free end such that it is at the level of the fixed end. The bending moment will be zero at its free end also at

A. midpoint of the cantilever

B. fixed point of the cantilever

C. 1/4th length from the free end

D. 3/4th length from the free end

E. half-length from the free end.

22) Stress in a beam due to simple bending is

A. directly proportional

B. inversely proportional

C. curvilinearly related

D. none of these.

23) When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called

A. shear stress

B. compressive stress

C. tensile stress

D. transverse stress.