Civil Engineering MCQ Questions
1- A single force and a couple acting in the same plane upon a rigid body
(A) Balance each other
(B) Cannot balance each other
(C) Produce moment of a couple
(D) Produce a couple
2- According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then
(A) Their lines of action are at equal distances
(B) The algebraic sum of their moments about any point in their plane is zero
(C) The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
(D) Their algebraic sum is zero
3- The coefficient of friction between two surfaces is the constant of proportionality between the applied force and normal reaction
(A) At the instant of impending motion
(B) At an instant after the motion takes place
(C) At the instant of application of force
(D) At the instant when the body is at rest
4- When a particle moves with a uniform velocity along a circular path, then the particle has
(A) tangential acceleration only
(B) centripetal acceleration only
(C) both tangential and centripetal acceleration
(D) none of the mentioned
5- Main difference between in Boussinesq and Westergaard’s theory is due to
(A) Consideration of different soil modulus value E
(B) Poisons ratio
(C) Homogeneous nature of soil
(D) Presence of voids and channels in soil
6- The net ultimate bearing capacity of a purely cohesive soil
(A) depends on the width of the footing and is independent of the depth of the footing
(B) depends on the width as well as the depth of the footing
(C) depends on the depth, but is independent of the width of the footing
(D) is independent of both the width and the depth of the footing
7- In a compaction test when the compacting effort increases the optimum moisture content
(A) Decreases
(B) No change
(C) Increases
(D) Unpredictable
8- A uniformly distributed load longer than the span of girder moves from left to right. The maximum bending moment at the centre of the span occurs when the uniformly distributed load occupies
(A) whole span of girder
(B) right half span of the girder
(C) left half span of the girder
(D) none of these
9- At liquid limit all soil possess
(A) Same shear strength of small magnitude
(B) Same shear strength of large magnitude
(C) Different shear strengths of small magnitude
(D) Different shear strengths of large magnitude
10- For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
(A) Is increased
(B) Is decreased
(C) Remains unchanged
(D) Becomes zero
11- The stress strain curve of concrete in compression is obtained by testing the cylindrical specimen under
(A) Uniform rate of strain
(B) Uniform rate of stress
(C) Constant stress condition
(D) Constant strain condition
12- The tensile strength of concrete is approximately what percent of compressive strength of concrete
(A) 50%
(B) 20%
(C) 10%
(D) 5%
ANSWERS:
1-(B), 2-(B), 3-(A), 4-(B), 5-(B), 6-(D), 7-(A), 8-(A), 9-(A), 10-(C), 11-(A), 12-(C)