Explore topic-wise MCQs in Civil Engineering.

This section includes 314 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.

101.

_ If y is force and x is velocity, then dimensions of —=r are dx2$?

A. M’^T’
B. M’L-‘T0
C. M’L-‘T1
D. M2L’T3
Answer» C. M‚Äö√Ñ√¥L-‚Äö√Ñ√≤T1
102.

_ For perfectly elastic bodies, the value of coefficient of restitution is$?

A. Zero
B. 0.5
C. 1.0
D. Between 0 and 1
Answer» D. Between 0 and 1
103.

_ If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is$?

A. g/2
B. g/3
C. g/4
D. g/5
Answer» C. g/4
104.

_ The length of a Second's pendulum, is$?

A. 99.0 cm
B. 99.4 cm
C. 100 cm
D. 101 cm
Answer» C. 100 cm
105.

_ The reaction at the support D of the continuous beam ABCD, hinged at two points shown in below figure is$?

A. 1.6 t ‚Üë
B. 1.6 t ‚Üì
C. 0.5 t ‚Üë
D. 0.5 t ‚Üì
Answer» C. 0.5 t ‚Äö√ú√´
106.

_ The unit of rotational inertia of a body in C.G.S system is$?

A. cm‚Å¥
B. kg.cm²
C. gm.cm²
D. gm.cm3
Answer» D. gm.cm3
107.

_ Energy may be defined as$?

A. Power of doing work
B. Capacity of doing work
C. Rate of doing work
D. All the above
Answer» C. Rate of doing work
108.

_ ‘u₁’ and ‘u₂’ are the velocities of approach of two moving bodies in the same direction and their corresponding velocities of separation are ‘v₁’ and ‘v₂’. As per Newton's law of collision of elastic bodies, the coefficient of restitution (e) is given by$?

A. e = v‚ÇÅ - v‚ÇÇ/u‚ÇÇ - u‚ÇÅ
B. e = u‚ÇÇ - u‚ÇÅ/v‚ÇÅ - v‚ÇÇ
C. e = v‚ÇÇ - v‚ÇÅ/u‚ÇÅ - u‚ÇÇ
D. e = v‚ÇÅ - v‚ÇÇ/u‚ÇÇ + u‚ÇÅ
Answer» D. e = v‚Äö√á√Ö - v‚Äö√á√á/u‚Äö√á√á + u‚Äö√á√Ö
109.

_ The resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’, is$?

A. P² + Q² + 2P sin θ
B. P² + Q² + 2PQ cos θ
C. P² + Q² + 2PQ tan θ
D. ‚Äö√ √∂(P¬¨‚â§ + Q¬¨‚â§ + 2PQ cos ≈í‚àè)
Answer» E.
110.

_ The Centre of gravity of a 10 √ó 15 √ó 5 cm T section from its bottom, is$?

A. 7.5 cm
B. 5.0 cm
C. 8.75 cm
D. 7.85 cm
Answer» D. 7.85 cm
111.

_ A Seconds pendulum executes$?

A. 0.5 beat per second
B. 1.0 beat per second
C. 2.0 beats per second
D. 2.5 beats per second
Answer» D. 2.5 beats per second
112.

_ The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through$?

A. 0.02 m
B. 2 m
C. 2.5 m
D. 20 m
Answer» B. 2 m
113.

_ The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at$?

A. 30°
B. 45°
C. 60°
D. 90°
Answer» E.
114.

_ The time period of a simple pendulum depends on (i) Mass of suspended particle (ii) Length of the pendulum (iii) Acceleration due to gravity$?

A. Only (i)
B. Both (ii) and (iii)
C. Both (i) and (iii)
D. All are correct
Answer» C. Both (i) and (iii)
115.

_ The vertical reaction at the support ‘A’ of the structure shown in below figure, is$?

A. 1 t
B. 2 t
C. 3 t
D. 3.5 t
Answer» D. 3.5 t
116.

_ Which of the following is a scalar quantity?$?

A. Energy
B. Momentum
C. Torque
D. Impulse
Answer» B. Momentum
117.

_ If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to$?

A. 7 kg
B. 1 kg
C. 5 kg
D. None of these
Answer» D. None of these
118.

_ A string of length 90 cm is fastened to two points ‘A’ and ‘B’ at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force ‘P’ is applied to the ring such that it is in equilibrium vertically below ‘B’. The value of ‘P’ is:$?

A. 40 g
B. 60 g
C. 80 g
D. 100 g
Answer» D. 100 g
119.

_ Periodic time of a particle moving with simple harmonic motion is the time taken by the particle for$?

A. Half oscillation
B. Quarter oscillation
C. Complete oscillation
D. None of these
Answer» D. None of these
120.

_ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is$?

A. 2 J
B. 4 J
C. 6 J
D. 8 J
Answer» C. 6 J
121.

_ In SI units, the units of force and energy are respectively$?

A. Newton and watt
B. Dyne and erg
C. Newton and joule
D. kg wt and joule
Answer» D. kg wt and joule
122.

_ The force polygon representing a set of forces in equilibrium is a$?

A. Triangle
B. Open polygon
C. Closed polygon
D. Parallelogram
Answer» D. Parallelogram
123.

__The following statement is one of the laws of Dynamic friction__

A. The force of friction always acts in a direction opposite to that in which a body is moving
B. The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction
C. For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed
D. All the above
Answer» E.
124.

__‘μ’ is coefficient of friction. A wheeled vehicle travelling on a circular level track will slip and overturn simultaneously if the ratio of its wheel distance to the height of its centroid, is__

A. μ
B. 2μ
C. 3μ
D. ½μ
Answer» C. 3≈í¬∫
125.

__A 50 kg boy climbs up a 8 m rope in gymnasium in 10 sec. The average power developed by the boy is approximately__

A. 400 watts
B. 500 watts
C. 4000 watts
D. None of these
Answer» B. 500 watts
126.

__From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The C.G. of the remainder shifts from the original position through__

A. 0.25 cm
B. 0.50 cm
C. 0.75 cm
D. 1.00 cm
Answer» C. 0.75 cm
127.

__For a given velocity of a projectile, the range is maximum when the angle of projection is__

A. 30°
B. 45°
C. 90°
D. 0°
Answer» C. 90¬¨‚àû
128.

__A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is__

A. n rpm
B. n/2 rpm
C. n/4 rpm
D. 2n rpm
Answer» C. n/4 rpm
129.

__A simple pendulum of length / has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be__

A. E
B. E/2
C. 2E
D. 4E
Answer» C. 2E
130.

__A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is__

A. 1/3
B. 2/3
C. 1/9
D. 8/9
Answer» E.
131.

__A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is__

A. 15
B. 18
C. 20
D. 26
Answer» D. 26
132.

__A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,__

A. 5 N
B. 10 N
C. 15 N
D. 25 N
Answer» E.
133.

__The acceleration of a train starting from rest at any instant is 1/6(V + 1) m/sec² where ‘V’ is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of__

A. 2000 m
B. 2100 m
C. 2200 m
D. 2300 m
Answer» E.
134.

__Force polygon method is applicable for__

A. Any coplanar force system
B. A system of parallel forces only
C. Concurrent coplanar force system
D. Non-concurrent coplanar force system
Answer» D. Non-concurrent coplanar force system
135.

__‘P’ is the force acting on a body whose mass is ‘m’ and acceleration is ‘f’. The equation P - mf= 0, is known as__

A. Equation of dynamics
B. Equation of dynamic equilibrium
C. Equation of statics
D. None of these
Answer» B. Equation of dynamic equilibrium
136.

__Joule is the unit of__

A. Power
B. Impulse
C. Work
D. Momentum
Answer» D. Momentum
137.

__A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is__

A. 0.25
B. 0.33
C. 0.40
D. 0.50
Answer» E.
138.

__Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is__

A. 9.3 m/sec
B. 8.3 m/sec
C. 7.3 m/sec
D. 6.3 m/sec
Answer» B. 8.3 m/sec
139.

__The necessary condition of equilibrium of a body is:__

A. Algebraic sum of horizontal components of all the forces must be zero
B. Algebraic sum of vertical components of all the forces must be zero
C. Algebraic sum of the moments of the forces about a point must be zero
D. All (A), (B) and (C)
Answer» E.
140.

__Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis?__

A. Disc with larger density
B. Disc with smaller density
C. Both discs will have same rotational inertia
D. None of the above
Answer» C. Both discs will have same rotational inertia
141.

__A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be__

A. Zero
B. 0.5 m/sec
C. 1.0 m/sec
D. 2.0 m/sec
Answer» D. 2.0 m/sec
142.

__If the kinetic energy and potential energy of a simple harmonic oscillator of amplitude A are both equal to half the total energy, then the displacement is equal to__

A. A
B. A/2
C. A/‚Äö√ √∂2
D. A‚Äö√ √∂2
Answer» D. A‚Äö√ √∂2
143.

__If the angle of projection is double the angle of inclination (α) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be__

A. ½ cos α
B. ½ sin α
C. ½ tan α
D. 2 cos α
Answer» B. ¬¨Œ© sin ≈í¬±
144.

__The angle of friction is:__

A. The ratio of the friction and the normal reaction
B. The force of friction when the body is in motion
C. The angle between the normal reaction and the resultant of normal reaction and limiting friction
D. The force of friction at which the body is just about to move
Answer» D. The force of friction at which the body is just about to move
145.

__One half of a vibration of a body, is called__

A. Period time
B. Oscillation
C. Beat
D. Amplitude
Answer» D. Amplitude
146.

__A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is__

A. less than (1/3) tan 0
B. less than (2/3) tan 0
C. less than (1/3) sin 6
D. less than (2/3) sin 6
Answer» B. less than (2/3) tan 0
147.

__The pole distance is measured in__

A. distance scale
B. force scale
C. mass scale
D. time scale
Answer» C. mass scale
148.

__When a body slides down an inclined surface, the acceleration (f) of the body, is given by__

A. f = g
B. f = g sin θ
C. f = g cos θ
D. f = g tan θ
Answer» C. f = g cos ≈í‚àè
149.

__Which one of the following statements is true?__

A. The tangent of the angle of friction is equal to coefficient of friction
B. The angle of repose is equal to angle of friction
C. The tangent of the angle of repose is equal to coefficient of friction
D. All the above
Answer» E.
150.

__The equation of motion of a particle starting from rest along a straight line is x = t3 - 3l2 + 5. The ratio of the velocities after 5 sec and 3 sec will be__

A. 2
B. 3
C. 4
D. 5
Answer» E.