#### The Following Section consists of Multiple Choice Questions on Engineering Mechanics. Take the test on Engineering Mechanics problems.

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Engineering Mechanics MCQ 1

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- Question 1 of 20
##### 1. Question

1 points#### The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is

CorrectIncorrect - Question 2 of 20
##### 2. Question

1 points#### A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)

CorrectIncorrect - Question 3 of 20
##### 3. Question

1 points#### If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that

CorrectIncorrect - Question 4 of 20
##### 4. Question

1 points#### The point, through which the whole weight of the body acts, irrespective of its position, is known as

CorrectIncorrect - Question 5 of 20
##### 5. Question

1 points#### Which of the following is a scalar quantity?

CorrectIncorrect - Question 6 of 20
##### 6. Question

1 points#### 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

CorrectIncorrect - Question 7 of 20
##### 7. Question

1 points#### In ideal machines, mechanical advantage is __________ velocity ratio.

CorrectIncorrect - Question 8 of 20
##### 8. Question

1 points#### The minimum force required to slide a body of weight W on a rough horizontal plane is

CorrectIncorrect - Question 9 of 20
##### 9. Question

1 points#### The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

CorrectIncorrect - Question 10 of 20
##### 10. Question

1 points#### The maximum efficiency of a lifting machine is

CorrectIncorrect - Question 11 of 20
##### 11. Question

1 points#### The centre of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

CorrectIncorrect - Question 12 of 20
##### 12. Question

1 points#### The motion of a particle round a fixed axis is

CorrectIncorrect - Question 13 of 20
##### 13. Question

1 points#### The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

CorrectIncorrect - Question 14 of 20
##### 14. Question

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

CorrectIncorrect - Question 15 of 20
##### 15. Question

1 points#### Which of the following are vector quantities?

CorrectIncorrect - Question 16 of 20
##### 16. Question

1 points#### Non-coplaner concurrent forces are those forces which

CorrectIncorrect - Question 17 of 20
##### 17. Question

1 points#### Which of the following statement is correct?

CorrectIncorrect - Question 18 of 20
##### 18. Question

1 points#### Concurrent forces are those forces whose lines of action

CorrectIncorrect - Question 19 of 20
##### 19. Question

1 points#### According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then

CorrectIncorrect - Question 20 of 20
##### 20. Question

1 points#### A machine having an efficiency less than 50%, is known as

CorrectIncorrect

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Engineering Mechanics MCQ 2

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- Question 1 of 20
##### 1. Question

1 points#### The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called

CorrectIncorrect - Question 2 of 20
##### 2. Question

1 points#### Varingon’s theorem of moments states that if a number of coplaner forces acting on a particle are in equilibrium, then

CorrectIncorrect - Question 3 of 20
##### 3. Question

1 points#### A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

CorrectIncorrect - Question 4 of 20
##### 4. Question

1 points#### When the spring of a watch is wound, it will possess

CorrectIncorrect - Question 5 of 20
##### 5. Question

1 points#### The rate of doing work is known as

CorrectIncorrect - Question 6 of 20
##### 6. Question

1 points#### The unit of work in S.I. units is

CorrectIncorrect - Question 7 of 20
##### 7. Question

1 points#### The static friction

CorrectIncorrect - Question 8 of 20
##### 8. Question

1 points#### A framed structure is imperfect, if the number of members are __________ (2j – 3).

CorrectIncorrect - Question 9 of 20
##### 9. Question

1 points#### The total energy possessed by a system of moving bodies

CorrectIncorrect - Question 10 of 20
##### 10. Question

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

CorrectIncorrect - Question 11 of 20
##### 11. Question

1 points#### A couple produces

CorrectIncorrect - Question 12 of 20
##### 12. Question

1 points#### For a self locking machine, the efficiency must be

CorrectIncorrect - Question 13 of 20
##### 13. Question

1 points#### The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then

CorrectIncorrect - Question 14 of 20
##### 14. Question

1 points#### Onejoule is equal to

CorrectIncorrect - Question 15 of 20
##### 15. Question

1 points#### Whenever a force acts on a body and the body undergoes a displacement, then

CorrectIncorrect - Question 16 of 20
##### 16. Question

1 points#### The rate of change of displacement of a body is called

CorrectIncorrect - Question 17 of 20
##### 17. Question

1 points#### The periodic time (T) is given by(where ω = Angular velocity of particle in rad / s.)

CorrectIncorrect - Question 18 of 20
##### 18. Question

1 points#### The forces, which meet at one point and their lines of action also lie on the same plane, are known as

CorrectIncorrect - Question 19 of 20
##### 19. Question

1 points#### The unit of energy in S.I. units is

CorrectIncorrect - Question 20 of 20
##### 20. Question

1 points#### The angle of inclination of the plane at which the body begins to move down the plane, is called

CorrectIncorrect

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Engineering Mechanics MCQ 3

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- Question 1 of 20
##### 1. Question

1 points#### Which of the following statement is incorrect?

CorrectIncorrect - Question 2 of 20
##### 2. Question

1 points#### The moment of a force

CorrectIncorrect - Question 3 of 20
##### 3. Question

1 points#### In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is

CorrectIncorrect - Question 4 of 20
##### 4. Question

1 points#### The total motion possessed by a body, is called

CorrectIncorrect - Question 5 of 20
##### 5. Question

1 points#### A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

CorrectIncorrect - Question 6 of 20
##### 6. Question

1 points#### If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton’s second law of motion,

CorrectIncorrect - Question 7 of 20
##### 7. Question

1 points#### The friction experienced by a body, when at rest, is known as

CorrectIncorrect - Question 8 of 20
##### 8. Question

1 points#### The matter contained in a body, is called

CorrectIncorrect - Question 9 of 20
##### 9. Question

1 points#### The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

CorrectIncorrect - Question 10 of 20
##### 10. Question

1 points#### According to lami’s theorem

CorrectIncorrect - Question 11 of 20
##### 11. Question

1 points#### The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

CorrectIncorrect - Question 12 of 20
##### 12. Question

1 points#### Which of the following are vector quantities?

CorrectIncorrect - Question 13 of 20
##### 13. Question

1 points#### The maximum mechanical advantage of a lifting machine is

CorrectIncorrect - Question 14 of 20
##### 14. Question

1 points#### A machine having an efficiency greater than 50%, is known as

CorrectIncorrect - Question 15 of 20
##### 15. Question

1 points#### Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

CorrectIncorrect - Question 16 of 20
##### 16. Question

1 points#### An ideal machine is one whose efficiency is

CorrectIncorrect - Question 17 of 20
##### 17. Question

1 points#### The energy possessed by a body, for doing work by virtue of its position, is called

CorrectIncorrect - Question 18 of 20
##### 18. Question

1 points#### Moment of inertia is the

CorrectIncorrect - Question 19 of 20
##### 19. Question

1 points#### The coefficient of restitution for inelastic bodies is

CorrectIncorrect - Question 20 of 20
##### 20. Question

1 points#### The term ‘centroid’ is

CorrectIncorrect

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Engineering Mechanics MCQ 4

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- Question 1 of 20
##### 1. Question

1 points#### Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is

CorrectIncorrect - Question 2 of 20
##### 2. Question

1 points#### The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is

CorrectIncorrect - Question 3 of 20
##### 3. Question

1 points#### In order to completely specify angular displacement by a vector, it must fix

CorrectIncorrect - Question 4 of 20
##### 4. Question

1 points#### Which of the following statement is correct in connection with projectiles?

CorrectIncorrect - Question 5 of 20
##### 5. Question

1 points#### The acceleration of a body sliding down an inclined surface is

CorrectIncorrect - Question 6 of 20
##### 6. Question

1 points#### If a body is acted upon by a number of coplaner non-concurrent forces, it may

CorrectIncorrect - Question 7 of 20
##### 7. Question

1 points#### The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

CorrectIncorrect - Question 8 of 20
##### 8. Question

1 points#### The unit of force in S.I. system of units is

CorrectIncorrect - Question 9 of 20
##### 9. Question

1 points#### A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

CorrectIncorrect - Question 10 of 20
##### 10. Question

1 points#### Joule is the unit of

CorrectIncorrect - Question 11 of 20
##### 11. Question

1 points#### A spherical body is symmetrical about its perpendicular axis. According to Routh’s rule, the moment of inertia of a body about an axis passing through its centre of gravity is(where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

CorrectIncorrect - Question 12 of 20
##### 12. Question

1 points#### The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

CorrectIncorrect - Question 13 of 20
##### 13. Question

1 points#### The efficiency of a lifting machine is the ratio of

CorrectIncorrect - Question 14 of 20
##### 14. Question

1 points#### A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

CorrectIncorrect - Question 15 of 20
##### 15. Question

1 points#### The length of a second’s pendulum is

CorrectIncorrect - Question 16 of 20
##### 16. Question

1 points#### The slope on the road surface generally provided on the curves is known as

CorrectIncorrect - Question 17 of 20
##### 17. Question

1 points#### A pendulum which executes one beat per second is known as

CorrectIncorrect - Question 18 of 20
##### 18. Question

1 points#### The forces, whose lines of action are parallel to each other and act in the same directions, are known as

CorrectIncorrect - Question 19 of 20
##### 19. Question

1 points#### A number of forces acting at a point will be in equilibrium, if

CorrectIncorrect - Question 20 of 20
##### 20. Question

1 points#### The unit of angular velocity is

CorrectIncorrect