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

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

A. Static friction

B. Dynamic friction

C. Limiting friction

D. Coefficient of friction

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If n = number of members and y = number of joints, then for a perfect frame, n = ?

A. 1/2

B. 2/3

C. 3/2

D. 2/4

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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

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The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is

A. 2mr²/3

B. 2mr²/5

C. 7mr²/3

D. 7mr²/5

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

A. Moment of inertia

B. Centre of gravity

C. Centre of percussion

D. Centre of mass

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The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

A. Static friction

B. Dynamic friction

C. Limiting friction

D. Coefficient of friction

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The motion of a wheel of a car is

A. Purely translation

B. Purely rotational

C. Combined translation and rotational

D. None of these

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The maximum mechanical advantage of a lifting machine is

A. 1 + m

B. 1 - m

C. 1 / m

D. m

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A redundant frame is also called __________ frame.

A. Perfect

B. Imperfect

C. Deficient

D. None of these

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Which of the following is not the unit of pressure?

A. kg/cm

B. Bar

C. Atmosphere

D. Newton

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The unit of power in S.I. units is

A. Horsepower

B. Joule

C. Watt

D. kg-m

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

A. Curved surface

B. Convex surface

C. Horizontal surface

D. None of these

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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. Both (B) and (C) above

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Which of the following statement is correct?

A. The algebraic sum of the forces, constituting the couple is zero

B. The algebraic sum of the forces, constituting the couple, about any point is the same

C. A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense

D. All of the above

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The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction.)

A. α = 45° + φ/2

B. α = 45° - φ/2

C. α = 90° + φ

D. α = 90° - φ

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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

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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

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If two bodies having masses m₁ and m₂ (m₁>m₂) have equal kinetic energies, the momentum of body having mass m₁ is _________ the momentum of body having mass m₂.

A. Equal to

B. Less than

C. Greater than

D. None of these

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

A. ω/2π

B. 2π/ω

C. 2π × ω

D. π/ω

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

A. Work is said to be done

B. Power is being transmitted

C. Body has kinetic energy of translation

D. None of these

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When trying to turn a key into a lock, following is applied

A. Coplanar force

B. Non-coplanar forces

C. Moment

D. Couple

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Coplanar concurrent forces are those forces which

A. Meet at one point, but their lines of action do not lie on the same plane

B. Do not meet at one point and their lines of action do not lie on the same plane

C. Meet at one point and their lines of action also lie on the same plane

D. Do not meet at one point, but their lines of action lie on the same plane

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A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

A. 25

B. 50

C. 100

D. 250

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Concurrent forces are those forces whose lines of action

A. Lie on the same line

B. Meet at one point

C. Meet on the same plane

D. None of these

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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 known as

A. Principle of independence of forces

B. Principle of resolution of forces

C. Principle of transmissibility of forces

D. None of these

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If the masses of both the bodies, as shown in the below figure, are doubled, then the acceleration in the string will be

A. Same

B. Half

C. Double

D. None of these

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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

A. Coplanar concurrent forces

B. Coplanar non-concurrent forces

C. Like parallel forces

D. Unlike parallel forces

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The power developed by a body acted upon by a torque T Newton metre (N - m) and revolving at ω radian/s is given by

A. T.ω (in watts)

B. T.ω/60 (in watts)

C. T.ω/75 (in kilowatts)

D. T.ω/4500 (in kilowatts)

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A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

A. Density of metal can't be determined

B. Metal is twice as dense as water

C. Metal will float in water

D. Metal is twice as dense as unknown fluid

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The horizontal range of a projectile (R) is given by

A. R = u² cos2α/g

B. R = u² sin2α/g

C. R = u² cosα/g

D. R = u² sinα/g

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

A. 3r/ 8

B. 4r/ 3π

C. 8r/3

D. 3r/4π

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Accepted Answer

A. Static friction

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

Correct Answer :

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Related Questions

If n = number of members and y = number of joints, then for a perfect frame, n = ?

D' Alembert's principle is used for

The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is

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

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The motion of a wheel of a car is

The maximum mechanical advantage of a lifting machine is

A redundant frame is also called __________ frame.

Which of the following is not the unit of pressure?

The unit of power in S.I. units is

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

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

Which of the following statement is correct?

The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction.)

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

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

If two bodies having masses m₁ and m₂ (m₁>m₂) have equal kinetic energies, the momentum of body having mass m₁ is _________ the momentum of body having mass m₂.

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

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

When trying to turn a key into a lock, following is applied

Coplanar concurrent forces are those forces which

A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Concurrent forces are those forces whose lines of action

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 known as

If the masses of both the bodies, as shown in the below figure, are doubled, then the acceleration in the string will be

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

The power developed by a body acted upon by a torque T Newton metre (N - m) and revolving at ω radian/s is given by

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

The horizontal range of a projectile (R) is given by

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

Also checkout

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

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

If n = number of members and y = number of joints, then for a perfect frame, n = ?

D' Alembert's principle is used for

The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is

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

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The motion of a wheel of a car is

The maximum mechanical advantage of a lifting machine is

A redundant frame is also called __________ frame.

Which of the following is not the unit of pressure?

The unit of power in S.I. units is

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

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

Which of the following statement is correct?

The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction.)

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

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

If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

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

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

When trying to turn a key into a lock, following is applied

Coplanar concurrent forces are those forces which

A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Concurrent forces are those forces whose lines of action

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 known as

If the masses of both the bodies, as shown in the below figure, are doubled, then the acceleration in the string will be

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

The power developed by a body acted upon by a torque T Newton metre (N - m) and revolving at ω radian/s is given by

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

The horizontal range of a projectile (R) is given by

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

Also checkout

If two bodies having masses m₁ and m₂ (m₁>m₂) have equal kinetic energies, the momentum of body having mass m₁ is _________ the momentum of body having mass m₂.