MOS/Imp questions on Solid mechanics for civil or mechanical engineering aspirants-Part 05

 1)The bending moment is maximum on a section where shearing force

A. is maximum

B. is minimum

C. is equal

D. changes sign.


2)up the correct statement from the following :

A. The rate of change of bending moment is equal to rate of shear force

B. The rate of change of shear force is equal to rate of loading

C. neither (a) nor (b)

D. both (a) and (b).


3)A rectangular log of wood is floating in water with a load of 100 N at its center. The maximum shear force in the wooden log is

A. 50 N at each end

B. 50 N at the center

C. 100 N at the center

D. none of these.

Answer: C

4)The following assumption is not true in the theory of pure torsion :

A. The twist along the shaft is uniform

B. The shaft is of uniform circular section throughout

C. Cross-section of the shaft, which is plane before twist remains plane after twist

D. All radii get twisted due to torsion.


5)The under mentioned type is simple strain

A. tensile strain

B. compressive strain

C. shear strain

D. volumetric strain

E. all the above.

Answer:  E

6)The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known

A. buckling factor

B. slenderness ratio

C. crippling factor

D. none of these.

Answer:  B

7)Failure of reverted joints is due to

A. Tearing of the plates between the rivet hole and the edge of the plate

B. Tearing of plates between rivets

C. Shearing of rivets

D. Crushing of rivets

E. All the above.

Answer: E

8)The maximum load to which a fillet joint of length L can be subjected to, is

A. 0.7 x S x fillet size x L

B. 2 x S x fillet size x L

C. permissible shear stress x fillet size x L


E. none of these.


9)Pick up the correct assumption of the theory of simple bending

A. The value of the Young's modulus is the same in tension as well as in compression

B. Transverse section of a beam remains plane before and after bending

C. The material of the beam is homogeneous and isotropic

D. The resultant pull or thrust on transverse section of a beam is zero

E. All the above.

Answer:  E

10)The neutral axis of a beam cross-section must

A. pass through the centroid of the section

B. be equidistant from the top of bottom films

C. be an axis of symmetry of the section

D. none of these.

Answer:  A

11)If the beam is supported so that there are only three unknown reactive elements at the supports. These can be determined by using the following fundamental equation of statics

A. ∑H = 0

B. ∑V = 0

C. ∑H = 0; ∑H = 0

D. ∑H = 0; ∑V = 0; ∑M = 0

E. ∑M = 0; ∑H = 0

Answer: D

12)In a solid arch, shear force acts

A. vertically upwards

B. along the axis of the arch

C. perpendicular to the axis of arch

D. tangentially to the arch

E. none of these.


13)To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally followed, is

A. middle half rule of columns

B. middle third rule of columns

C. middle fourth rule of columns

D. none of these.


14)A member is balanced at its end by two inclined members carrying equal forces. For equilibrium the angle between the inclined bars must be


B. 45°

C. 60°

D. 90°

E. 120°


15)For a cantilever with a uniformly distributed load W over its entire length L, the maximum bending moment is

A. W L

B. W L

C. W L

D. W 2 L

E. W L 2


16) For keeping the stress wholly compressive the load may be applied on a circular column anywhere within a concentric circle of diameter

A. d/2

B. d/3

C. d/4

D. d/8

E. d/10


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