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Engineering Mechanics Online Exam Quiz

Important questions about Engineering Mechanics. Engineering Mechanics MCQ questions with answers. Engineering Mechanics exam questions and answers for students and interviews.

1. The force which acts along the radius of a circle and directed towards the centre of the circle is known as centripetal force.

Options

A : True

B : False

C :

D :

2. A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

Options

A : 5

B : 10

C : 20

D : 40

4. Which of the following is a scalar quantity?

Options

A : Force

B : Speed

C : Velocity

D : Acceleration

5. The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity.

Options

A : directly

B : inversely

C :

D :

6. The unit of mass moment of inertia in S.I. units is kg-m 2 .

Options

A : True

B : False

C :

D :

7. If a number of forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are not in equilibrium.

Options

A : Agree

B : Disagree

C :

D :

8. The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

Options

A : Newton's first law of motion

B : Newton's second law of motion

C : Newton's third law of motion

D : none of these

10. Energy may be defined as the capacity of doing work.

Options

A : Correct

B : Incorrect

C :

D :

2. The rate of change of displacement of a body is called

Options

A : velocity

B : acceleration

C : momentum

D : none of these

3. If the body falls freely under gravity, then the gravitational acceleration is taken as

Options

A : +8.9 m/s 2

B : -8.9 m/s 2

C : +9.8 m/s 2

D : -9.8 m/s 2

4. A smooth cylinder lying on a __________ is in neutral equilibrium.

Options

A : curved surface

B : convex surface

C : horizontal surface

D :

5. The radius of gyration is the distance where the whole mass (or area) of a body is assumed to be concentrated.

Options

A : Correct

B : Incorrect

C :

D :

8. The static friction

Options

A : bears a constant ratio to the normal reaction between the two surfaces

B : is independent of the area of contact, between the two surfaces

C : always acts in a direction, opposite to that in which the body tends to move

D : all of the above

9. A couple produces

Options

A : translatory motion

B : rotational motion

C : combined translatory and rotational motion

D : none of the above

10. The total energy possessed by a system of moving bodies

Options

A : is constant at every instant

B : varies from point to point

C : is maximum in the start and minimum at the end

D : is minimum in the start and maximum at the end

1. In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

Options

A : less than

B : equal to

C : more than

D :

2. When the spring of a watch is wound, it will possess

Options

A : strain energy

B : kinetic energy

C : heat energy

D : electrical energy

3. The angle of inclination with the vertical is __________ if the cyclist is running at a faster speed than that when he is running at a slower speed.

Options

A : more

B : less

C :

D :

4. An irregular body may have more than one centre of gravity.

Options

A : Yes

B : No

C :

D :

6. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, ? = Helix angle, and ? = Angle of friction.)

Options

A : P = W tan (? - ?)

B : P = W tan (? + ?)

C : P = W tan (? - ?)

D : P = W cos (? + ?)

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