Explore topic-wise MCQs in Civil Engineering.

This section includes 719 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.

51.

The unit of power in S.I. units is______________?

A. newton meter
B. watt
C. joule
D. kilogram meter/sec
E. pascal per sec
Answer» C. joule
Discussion
52.

The unit of force in S.I. units is_________________?

A. kilogram
B. newton
C. watt
D. dyne
E. joule
Answer» C. watt
Discussion
53.

The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be_________________?

A. 20 kg, – ve sense
B. 20 kg, + ve sense
C. 10 kg, + ve sense
D. 10 kg, – ve sense
E. 45 kg, + ve sense
Answer» B. 20 kg, + ve sense
Discussion
54.

The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to__________________?

A. the algebraic sum of the resolved parts of the forces in the given direction
B. the sum of the resolved parts of the forces in the given direction
C. the difference of the forces multiplied by the cosine of 9
D. the sum of the forces multiplied by the sine of 9
E. the sum of the forces multiplied by the tangent of 9
Answer» B. the sum of the resolved parts of the forces in the given direction
Discussion
55.

The ratio of limiting friction and normal reaction is known as_______________?

A. coefficient of friction
B. angle of friction
C. angle of repose
D. sliding friction
E. friction resistance
Answer» B. angle of friction
Discussion
56.

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

A. resultant couple
B. moment of the forces
C. resulting couple
D. moment of the couple
E. none of the above
Answer» E. none of the above
Discussion
57.

The possible loading in various members of framed structures are_______________?

A. compression or tension
B. buckling or shear
C. shear or tension
D. all of the above
E. bending
Answer» B. buckling or shear
Discussion
58.

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

A. coplanar
B. meet at one point ;
C. both A. and B. above
D. all be equal
E. something else
Answer» D. all be equal
Discussion
59.

The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is_________________?

A. same
B. double
C. half
D. four times
E. one fourth
Answer» C. half
Discussion
60.

The maximum frictional force which comes into play when a body just begins to slide over another surface is called_____________________?

A. limiting friction
B. sliding friction
C. rolling friction
D. kinematic friction
E. dynamic friction
Answer» B. sliding friction
Discussion
61.

The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are____________________?

A. 2 and V6
B. 3 and 1 kg
C. V5andV5
D. 2 and 5
E. none of the above
Answer» D. 2 and 5
Discussion
62.

The forces, which meet at one point, but their lines of action do not lie in a plane, are called______________?

A. coplanar non-concurrent forces
B. non-coplanar concurrent forces
C. non-coplanar non-concurrent forces
D. intersecting forces
E. none of the above
Answer» C. non-coplanar non-concurrent forces
Discussion
63.

The coefficient of friction depends on_________________?

A. area of contact
B. shape of surfaces
C. strength of surfaces
D. nature of surface
E. all of the above
Answer» E. all of the above
Discussion
64.

The co-efficient of friction depends upon________________?

A. nature of surfaces
B. area of contact
C. shape of the surfaces
D. all of the above
E. A. and B. above
Answer» B. area of contact
Discussion
65.

The C.G. of a solid hemisphere lies on the central radius 3r_______________?

A. at distance — from the plane base 3r
B. at distance — from the plane base 3r
C. at distance — from the plane base 3r
D. at distance — from the plane base or
E. at distance — from the plane base
Answer» E. at distance — from the plane base
Discussion
66.

The C.G. of a right circular solid cone of height h lies at the following distance from the base_____________?

A. h/2
B. J/3
C. h/6
D. h/4
E. 3/i/5
Answer» E. 3/i/5
Discussion
67.

The C.G. of a plane lamina will not be at its geometrical centre in the case of a______________?

A. right angled triangle
B. equilateral triangle
C. square
D. circle
E. rectangle
Answer» B. equilateral triangle
Discussion
68.

The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be______________?

A. r/2
B. 2r/3
C. r/A
D. 3r/2
E. 3r/A
Answer» E. 3r/A
Discussion
69.

The center of percussion of the homogeneous rod of length L suspended at the top will be__________________?

A. L/2
B. L/3
C. 3L/4
D. 2L/3
E. 3L/8
Answer» E. 3L/8
Discussion
70.

The center of gravity of a uniform lamina lies at_______________?

A. the center of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above
Answer» D. all of the above
Discussion
71.

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

A. concurrence of the medians
B. intersection of its altitudes
C. intersection of bisector of angles
D. intersection of diagonals
E. all of the above
Answer» B. intersection of its altitudes
Discussion
72.

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of__________________?

A. friction
B. limiting friction
C. repose
D. kinematic friction
E. static friction
Answer» D. kinematic friction
Discussion
73.

The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of__________________?

A. forces
B. independence of forces
C. dependence of forces
D. balance of force
E. resolution of forces
Answer» F.
Discussion
74.

The algebraic sum of moments of the forces forming couple about any point in their plane is________________?

A. equal to the moment of the couple
B. constant
C. both of above are correct
D. both of above are wrong
E. none of the above
Answer» B. constant
Discussion
75.

Pick up wrong statement about friction force for dry surfaces. Friction force is________________?

A. proportional to normal load between the surfaces
B. dependent on the materials of contact surface
C. proportional to velocity of sliding
D. independent of the area of contact surfaces
E. none of the above is wrong statement
Answer» D. independent of the area of contact surfaces
Discussion
76.

Pick up the incorrect statement from the following _______________?

A. The C.G. of a circle is at its center
B. The C.G. of a triangle is at the intersection of its medians
C. The C.G. of a rectangle is at the inter-section of its diagonals
D. The C.G. of a semicircle is at a distance of r/2 from the center
E. The C-G. of an ellipse is at its center
Answer» E. The C-G. of an ellipse is at its center
Discussion
77.

On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be__________________?

A. downwards at its upper end
B. upwards at its upper end
C. perpendicular to the wall at its upper end
D. zero at its upper end
E. none of the above
Answer» E. none of the above
Discussion
78.

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be__________________?

A. towards the wall at its upper end
B. away from the wall at its upper end
C. upwards at its upper end
D. downwards at its upper end
E. none of the above
Answer» D. downwards at its upper end
Discussion
79.

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?

A. along the plane
B. horizontally
C. vertically
D. at an angle equal to the angle of friction to the inclined plane
E. unpredictable
Answer» E. unpredictable
Discussion
80.

Kinetic friction is the________________?

A. tangent of angle between normal reac-tion and the resultant of normal reac-tion and the limiting friction
B. ratio of limiting friction and normal reaction
C. the friction force acting when the body is just about to move
D. the friction force acting when the body is in motion
E. dynamic friction
Answer» E. dynamic friction
Discussion
81.

In the lever of third order, load W, effort P and fulcrum F are oriented as follows_________________?

A. W between P and F
B. F between W and P
C. P between W and F
D. W, P and F all on one side
E. none of the above
Answer» B. F between W and P
Discussion
82.

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

A. reaction of any smooth surface with which the body is in contact
B. reaction of a rough surface of a body which rolls on it without slipping
C. reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
D. all of the above
E. none of the above
Answer» E. none of the above
Discussion
83.

In ideal machines________________?

A. mechanical advantage is greater than velocity ratio
B. mechanical advantage is equal to velocity ratio
C. mechanical advantage is less than velocity ratio
D. mechanical advantage is unity
E. none of the above
Answer» C. mechanical advantage is less than velocity ratio
Discussion
84.

In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than___________________?

A. two members with unknown forces of the frame
B. three members with unknown forces of the frame
C. four members with unknown forces of the frame
D. three members with known forces of the frame
E. four members with two known forces
Answer» C. four members with unknown forces of the frame
Discussion
85.

In actual machines______________?

A. mechanical advantage is greater than velocity ratio
B. mechanical advantage is equal to velocity ratio
C. mechanical advantage is less than velocity ratio
D. mechanical advantage is unity
E. none of the above
Answer» D. mechanical advantage is unity
Discussion
86.

If two equal forces of magnitude P act at an angle 9°, their resultant will be________________?

A. P/2 cos 9/2
B. IP sin 9/2
C. 2P tan 9/2
D. IP cos 9/2
E. Psin 9/2
Answer» E. Psin 9/2
Discussion
87.

If three forces acting in different planes can be represented by a triangle, these will be in________________?

A. non-equilibrium
B. partial equilibrium
C. full equilibrium
D. unpredictable
E. none of the above
Answer» B. partial equilibrium
Discussion
88.

If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either__________________?

A. meet in a point
B. be all parallel
C. at least two of them must meet
D. all the above are correct
E. none of the above
Answer» E. none of the above
Discussion
89.

If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella_________________?

A. more inclined when moving
B. less inclined when moving
C. more inclined when standing
D. less inclined when standing
E. none of the above
Answer» E. none of the above
Discussion
90.

If n = number of members andy = number of joints, then for a perfect frame, n =_______________?

A. j-2
B. 2j-l
C. 2/-3
D. 3/-2
E. 2/ -4
Answer» D. 3/-2
Discussion
91.

If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be___________________?

A. maximum
B. minimum
C. zero
D. infinity
E. same as the force applied
Answer» D. infinity
Discussion
92.

If a rigid body is in equilibrium under the action of three forces, then_______________?

A. these forces are equal
B. the lines of action of these forces meet in a point
C. the lines of action of these forces are parallel
D. B. and C. above
E. none of the above
Answer» E. none of the above
Discussion
93.

If a number of forces act simultaneously on a particle, it is possible_________________?

A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force
Answer» C. to replace them by a single force through C.G.
Discussion
94.

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate___________________?

A. 0.5 cm
B. 1.0 cm
C. 1.5 cm
D. 2.5 cm
E. 0.25 cm
Answer» B. 1.0 cm
Discussion
95.

Frictional force encountered after commencement of motion is called________________?

A. post friction
B. limiting friction
C. kinematic friction
D. frictional resistance
E. dynamic friction
Answer» F.
Discussion
96.

Forces are called coplanar when all of them acting on body lie in________________?

A. one point
B. one plane
C. different planes
D. perpendicular planes
E. different points
Answer» C. different planes
Discussion
97.

Forces are called concurrent when their lines of action meet in_______________?

A. one point
B. two points
C. plane
D. perpendicular planes
E. different planes
Answer» B. two points
Discussion
98.

Effect of a force on a body depends upon________________?

A. magnitude
B. direction
C. position or line of action
D. all of the above
E. none of the above
Answer» F.
Discussion
99.

Dynamic friction as compared to static friction is________________?

A. same
B. more
C. less
D. may be less of more depending on nature of surfaces and velocity
E. has no correlation
Answer» D. may be less of more depending on nature of surfaces and velocity
Discussion
100.

D’ Alembert’s principle is used for___________________?

A. reducing the problem of kinetics to equivalent statics problem
B. determining stresses in the truss
C. stability of floating bodies
D. designing safe structures
E. solving kinematic problems
Answer» B. determining stresses in the truss
Discussion