Explore topic-wise MCQs in Mechanical Engineering Questions.

This section includes 153 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.

1.

In 5 seconds a body covers a distance of 50 m and in 10 seconds it covers 80 m with uniform acceleration. What is the distance traveled in 15 seconds?
A. 100 m
B. 110 m
C. 1000 m
D. None of the above
Answer» C. 1000 m
Discussion
2.

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
3.

A cable with a uniformly distributed load per horizontal meter run will take the following shape________________?
A. straight line
B. parabola
C. hyperbola
D. elliptical
E. part of a circle
Answer» C. hyperbola
Discussion
4.

When acceleration is _______, velocity of a particle is constant.
A. constant but non zero
B. maximum
C. zero
D. none of the above
Answer» D. none of the above
Discussion
5.

Which of the following statements is false about frame/truss?
A. Bent member is never used in a truss
B. Internal hinges are used to connect members in a truss
C. All members in the truss are two force members
D. Multiforce members can be used in a frame
Answer» C. All members in the truss are two force members
Discussion
6.

If a material has no uniform density throughout the body, then the position of centroid and center of mass are ________
A. identical
B. not identical
C. independent upon the density
D. unpredictable
Answer» C. independent upon the density
Discussion
7.

Forces passing through a common point are known as _____
A. collinear forces
B. co-planer forces
C. concurrent forces
D. none of the above
Answer» D. none of the above
Discussion
8.

Couple is formed due to two ______
A. like, parallel and non-collinear forces of same magnitude
B. like, perpendicular and collinear forces of different magnitude
C. unlike, parallel and non-collinear forces of same magnitude
D. unlike, perpendicular and non-collinear forces of different magnitude
Answer» D. unlike, perpendicular and non-collinear forces of different magnitude
Discussion
9.

Varignon's theorem is used to find ________
A. direction of resultant force
B. location of resultant force
C. magnitude of resultant force
D. nature of resultant force
Answer» C. magnitude of resultant force
Discussion
10.

Which of the following laminas do not have centroid at its geometrical centre?
A. Circle
B. Equilateral triangle
C. Right angled triangle
D. None of the above
Answer» D. None of the above
Discussion
11.

A particle moving with respect to fixed frame of reference is called as __________
A. absolute motion
B. relative motion
C. rectilinear motion
D. none of the above
Answer» B. relative motion
Discussion
12.

What is the coefficient of restitution (e) for elastic impact?
A. e = 0
B. e = 1
C. e < 0
D. e > 1
Answer» C. e < 0
Discussion
13.

The rate of change of __________ with respect to time is called as jerk.
A. acceleration
B. density
C. displacement
D. volume
Answer» B. density
Discussion
14.

During unidirectional motion, the displacement and distance traveled by a particle with uniform acceleration is ______
A. different
B. same
C. variable
D. none of the above
Answer» C. variable
Discussion
15.

Coefficient of restitution is the ratio of impulse during __________
A. plastic deformation and elastic deformation
B. elastic deformation and plastic deformation
C. restoration period and deformation period
D. deformation period and restoration period
Answer» D. deformation period and restoration period
Discussion
16.

A boat sails across a river with a velocity of 10 km/hr. If resultant boat velocity is 14 km/hr, then what is the velocity of river water?
A. 17.20 km/hr
B. 10 km/hr
C. 9.79 km/hr
D. 4.88 km/hr
Answer» D. 4.88 km/hr
Discussion
17.

Indeterminate structures have number of unknown quantities _________ available conditions of equilibrium.
A. equal to
B. less than
C. more than
D. none of the above
Answer» D. none of the above
Discussion
18.

If coefficient of restitution is zero during plastic impact, then ___________
A. kinetic energy is conserved
B. momentum energy is conserved
C. bodies move away after impact
D. all of the above
Answer» C. bodies move away after impact
Discussion
19.

Cantilever beam has one end _________ and other end _______.
A. hinged, free
B. fixed, free
C. fixed, hinged
D. none of the above
Answer» C. fixed, hinged
Discussion
20.

A constant force of 150 N is applied on a block of 5 kg on a horizontal surface. What is the time required to attain velocity of 40 m/sec by the block?
A. 0.8 sec
B. 1 sec
C. 1.33 sec
D. None of the above
Answer» D. None of the above
Discussion
21.

Which of the following conditions is satisfied for cantilever truss?
A. n > 2j – R
B. n < 2j – R
C. n = 2j – R
D. n ≠ 2j – R
Answer» D. n ≠ 2j – R
Discussion
22.

Redundant truss is a type of ______
A. perfect truss
B. imperfect truss
C. stable truss
D. none of the above
Answer» C. stable truss
Discussion
23.

If a truss consists of 8 joints, 10 members and 4 reaction components then, it is a __________
A. cantilever truss
B. defficient truss
C. redundant truss
D. none of the above
Answer» C. redundant truss
Discussion
24.

If n > 2j – R, then the truss is called as _________. (n = number of joints, j = number of members, R = number of reaction components)
A. perfect truss
B. redundant truss
C. deficient truss
D. none of the above
Answer» C. deficient truss
Discussion
25.

What are the limitations of string law?
A. Direction of motion cannot be specified
B. Valid only when more than three particles are connected by a single string
C. Both a. and b.
D. None of the above
Answer» B. Valid only when more than three particles are connected by a single string
Discussion
26.

Two cars X and Y move on adjacent roads in opposite directions. If velocity of car X and Y is 80 km/hr and 60 km/hr respectively, then what will be the relative velocity of car X w.r.t. Y?
A. 70 km/hr
B. 100 km/hr
C. 140 km/hr
D. Insufficient data
Answer» D. Insufficient data
Discussion
27.

What is the maximum distance traveled by a block moving upwards on an inclined plane of 30° with velocity of 20 m/s, if coefficient of friction is 0.23 between the block and inclined plane?
A. 29.19 m
B. 22.56 m
C. 17.32 m
D. 17.00 m
Answer» B. 22.56 m
Discussion
28.

What is the angle of projection for a bullet fired over a horizontal plane, when horizontal range is equal to 4 times the maximum height?
A. 30°
B. 45°
C. 76°
D. 90°
Answer» C. 76°
Discussion
29.

Which motion has magnitude of static frictional force directly proportional to normal reaction?
A. Actual motion
B. Impending motion
C. Both a. and b.
D. None of the above
Answer» C. Both a. and b.
Discussion
30.

Frictional force depends on ________
A. surface area in contact
B. roughness of surface
C. both a. and b.
D. none of the above
Answer» C. both a. and b.
Discussion
31.

Which of the following conditions do not change the effect of couple?
A. Shifting of couple to a new position in its plane
B. Shifting of couple to a parallel plane
C. Rotation of couple in its plane
D. All of the above
Answer» E.
Discussion
32.

A man of 60 kg moves in a lift of constant velocity 5 m/s. What is the reactive force acting on the man by the elevator?
A. 888 N
B. 588 N
C. 288 N
D. Zero
Answer» C. 288 N
Discussion
33.

What is the angle made by side of a square lamina, if it is freely suspended from a corner with the horizontal?
A. 0°
B. 45°
C. 90°
D. 180°
Answer» C. 90°
Discussion
34.

What is the C.G of an isosceles triangle of base 20 cm and side 40?
A. 12.90 cm
B. 13.28 cm
C. 19.36 cm
D. 38.72 cm
Answer» B. 13.28 cm
Discussion
35.

If two concurrent forces A and B acting on a point are 200 N and 300 N. What is the magnitude of resultant force, if it makes an angle of 50° with each force?
A. 471.08 N
B. 455.12 N
C. 400.56 N
D. Insufficient data
Answer» C. 400.56 N
Discussion
36.

When motion is _______, the normal component of acceleration is zero.
A. curvilinear
B. rotational
C. rectilinear
D. translation
Answer» D. translation
Discussion
37.

If a body in equilibrium condition is acted by three forces at three points, then the line of action of these forces should be _____
A. always concurrent
B. always parallel
C. concurrent or parallel
D. none of the above
Answer» D. none of the above
Discussion
38.

According to work energy principle, a particle of mass m when subjected to unbalanced force system, the work done during displacement by all forces is equal to change in ____________ during displacement.
A. gravitational energy
B. kinetic energy
C. mechanical energy
D. potential energy
Answer» C. mechanical energy
Discussion
39.

In projectile motion, which of the following factors affecting the actual path of motion are neglected?
A. Curvature of earth
B. Rotation of earth
C. Wind resistance
D. All of the above
Answer» E.
Discussion
40.

A ball is dropped on a horizontal surface from a height of 15 m. What will be the rebounding height of the ball after striking the surface? (coefficient of restitution = 0.8)
A. 9.6 m
B. 6.5 m
C. 5.6 m
D. Insufficient data
Answer» B. 6.5 m
Discussion
41.

Which of the following is represented by the area under force-displacement diagram?
A. Impulse
B. Momentum
C. Power
D. Work done
Answer» E.
Discussion
42.

Which of the following laws derive impulse moment principle?
A. Newton's 3rd law
B. Newton's 2nd law
C. Newton's 1st law
D. All of the above
Answer» C. Newton's 1st law
Discussion
43.

The force for which work done is independent of _______ is called as conservative force.
A. distance
B. path
C. time
D. all of the above
Answer» C. time
Discussion
44.

Uniformly distributed load of 5 kN acts on a simply supported beam of length 10 m. What are the reactions at end points of the beam?
A. 12.5 kN
B. 25 kN
C. 50 kN
D. None of the above
Answer» C. 50 kN
Discussion
45.

What is the length of a train which crosses a bridge of 150 m in 20 sec with a speed of 40 km/h?
A. 222 m
B. 150 m
C. 72.2 m
D. 70.5 m
Answer» D. 70.5 m
Discussion
46.

Which belt is used to transmit power at high speeds?
A. Flat belt
B. V belt
C. Both a. and b.
D. None of the above
Answer» C. Both a. and b.
Discussion
47.

According to Lami's theorem, a body is in equilibrium condition if each force among three ____________ are proportional to sine angle between other two.
A. coplanar, collinear forces
B. collinear, non-concurrent forces
C. coplanar, non-concurrent forces
D. coplanar, concurrent forces
Answer» E.
Discussion
48.

What is the kinetic energy at the highest point, if at an angle of 30° with the horizontal a ball is projected with a kinetic energy E?
A. E / 2
B. E / √2
C. 5E / 4
D. 3E / 4
Answer» E.
Discussion
49.

Which of the following factors are related by work energy principle?
A. force, displacement and time
B. force, velocity, time and mass
C. force, velocity, displacement
D. displacement, time and mass
Answer» D. displacement, time and mass
Discussion
50.

What is the S.I unit of work done?
A. Joule
B. Newton meter
C. Both a. and b.
D. None of the above
Answer» D. None of the above
Discussion