civil engineering MCQs – Page 57

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs

1121. P = / L is the equation for Eulers crippling load if_________________?
0

A. Both the ends are fixed

B. Both the ends are hinged

C. One end is fixed and other end is free

D. One end is fixed and other end is hinged

1122. In a shaft, the shear stress is not directly proportional to_________________?
0

A. Modulus of rigidity

B. Length of the shaft

C. Radius of the shaft

D. Angle of twist

1123. In the equation of virtual work, following force is neglected_______________?
0

A. reaction of any smooth surface with which the body is in contact

B. all of the above

C. none of the above

D. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

E. reaction of a rough surface of a body which rolls on it without slipping

1124. The force in EC of the truss shown in the given figure, is__________________?
0

A. 5t compression

B. Zero

C. 4t tension

D. 5t tension

1125. In plastic analysis, the shape factor for rectangular section, is________________?
0

A. 1.7

B. 1.6

C. 1.4

D. 1.5

1126. In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is__________________?
0

A. L/2

B. L/5

C. L/4

D. L/3

1127. The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with a uniformly distributed load l t per horizontal length is (where Ic is the M.I. at the crown, which varies as the slope of the arch)___________________?
0

A. 200/EIc

B. 150/EIc

C. 50/EIc

D. 100/EIc

1128. The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is__________________?
0

A. 1

B. 2

D. 1

1129. Stream lines and path lines always coincide in case of__________________?
0

A. laminar flow

B. uniform flow

C. steady flow

D. turbulent flow

1130. inertia of a rectangular section of width and depth about an axis passing The moment of through C.G. and parallel to its width is_______________?
0

A. BD3/6

B. BD3/12

C. BD/6

D. BD/6

1131. The coefficient of friction depends on_________________?
0

A. nature of surface

B. all of the above

C. shape of surfaces

D. area of contact

E. strength of surfaces

1132. section modulus of a square section of side B and that of a circular section of The ratio of the diameter D, is___________________?
0

A. 15-Feb

B. /16

C. 8-Mar

D. 3 /16

1133. Slenderness ratio of a long column, is_________________?
0

A. Radius of gyration divided by area of cross-section

B. Area of cross-section divided by least radius of gyration

C. Area of cross-section divided by radius of gyration

D. Length of column divided by least radius of gyration

1134. The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is_______________?
0

A. 1/2 R

B. 1/3 R

C. 3/4R

D. 2/3 R

1135. A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is______________?
0

A. 4WD3n/d4N

B. 4WDn/d4N

C. 4WD3n/d4N

D. 4WDn/d4N

1136. The yield moment of a cross section is defined as the moment that will just produce the yield stress in_________________?
0

A. The fibre everywhere

B. The outer most fibre of the section

C. The neutral fibre of the section

D. The inner most fibre of the section

1137. P=4EI/L is the equation of Eulers crippling load if________________?
0

A. Both the ends are fixed

B. Both the ends are hinged

C. One end is fixed and other end is free

D. One end is fixed and other end is hinged

1138. A road of uniform cross-section A and length L force P. The Youngs Modulus E of the material, is_________________?
0

A. E =/P. L

B. E = /A. L

C. E = P. A/

D. E = P. L/

1139. A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is_____________?
0

A. 35 N

B. 40 N

C. 30 N

D. 25 N

1140. The product of either force of couple with the arm of the couple is called________________?
0

A. moment of the couple

B. moment of the forces

C. resultant couple

D. none of the above

E. resulting couple

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