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

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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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A couple produces

A. Translatory motion

B. Rotational motion

C. Combined translatory and rotational motion

D. None of the above

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In ideal machines

A. Mechanical advantage is greater than velocity ratio

B. Mechanical advantage is equal to velocity ratio

C. Mechanical advantage is less than velocity ratio

D. Mechanical advantage is unity

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The velocity of a particle moving with simple harmonic motion is __________ at the mean position.

A. Zero

B. Minimum

C. Maximum

D. None of these

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Which of the following statement is incorrect?

A. A force acting in the opposite direction to the motion of the body is called force of friction

B. The ratio of the limiting friction to the normal reaction is called coefficient of friction

C. A machine whose efficiency is 100% is known as an ideal machine

D. The velocity ratio of a machine is the ratio of load lifted to the effort applied

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Static friction is always __________ dynamic friction.

A. Equal to

B. Less than

C. Greater than

D. None of these

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The matter contained in a body, is called

A. Impulsive force

B. Mass

C. Weight

D. Momentum

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In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively

A. √3. W (tensile) and 2W (compressive)

B. 2W (tensile) and √3. W (compressive)

C. 2√3. W (tensile) and 2√3. W (compressive)

D. None of the above

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Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

A. Along the plane

B. Horizontally

C. Vertically

D. At an angle equal to the angle of friction to the inclined plane

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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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Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

A. db³/12

B. bd³/12

C. db³/36

D. bd³/36

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The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.

A. Less than

B. More than

C. Equal to

D. None of These

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A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

A. Equal to

B. Less than

C. Greater than

D. Either (B) or (C)

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A body will begin to move down an inclined plane if the angle of inclination of the plane is _________ the angle of friction.

A. Equal to

B. Less than

C. Greater than

D. None of these

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The maximum frictional force which comes into play when a body just begins to slide over another surface is called

A. Limiting friction

B. Sliding friction

C. Rolling friction

D. Kinematic friction

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The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

A. Equal to

B. Less than

C. Greater than

D. None of these

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Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is

A. π/16 (D² - d²)

B. π/16 (D³ - d³)

C. π/32 (D⁴ - d⁴)

D. π/64 (D⁴ - d⁴)

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The rate of change of displacement of a body is called

A. Velocity

B. Acceleration

C. Momentum

D. None of these

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

A. πN/60

B. πN/180

C. 2πN/60

D. 2πN/180

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Forces are called concurrent when their lines of action meet in

A. One point

B. Two points

C. Plane

D. Perpendicular planes

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One watt is equal to

A. 0.1 joule/s

B. 1 joule/s

C. 10 joules/s

D. 100 joules/s

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If a number of forces are acting at a point, their resultant is given by

A. (ΣV)² + (ΣH)²

B. √[(ΣV)² + (ΣH)²]

C. (ΣV)² +(ΣH)² +2(ΣV)(ΣH)

D. √[(ΣV)² +(ΣH)² +2(ΣV)(ΣH)]

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Angle of friction is the

A. Angle between normal reaction and the resultant of normal reaction and the limiting friction

B. Ratio of limiting friction and normal reaction

C. The ratio of minimum friction force to the friction force acting when the body is just about to move

D. The ratio of minimum friction force to friction force acting when the body is in motion

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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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Which of the following is not the unit of distance?

A. Angstrom

B. Light year

C. Micron

D. Milestone

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If the gravitational acceleration at any place is doubled, then the weight of a body will be

A. g/2

B. g

C. √2.g

D. 2g

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The time of flight (t) of a projectile on a horizontal plane is given by

A. t = 2u. sinα/g

B. t = 2u. cosα/g

C. t = 2u. tanα/g

D. t = 2u/g.sinα

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Centre of gravity of a solid cone lies on the axis at the height

A. One fourth of the total height above base

B. One third of the total height above base

C. One-half of the total height above base

D. Three eighth of the total height above the base

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Frictional force encountered after commencement of motion is called

A. Limiting friction

B. Kinematic friction

C. Frictional resistance

D. Dynamic friction

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

A. Towards the wall at its upper end

B. Away from the wall at its upper end

C. Downward at its upper end

D. Upward at its upper end

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Accepted Answer

B. To replace them by a single force

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

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

A couple produces

In ideal machines

The velocity of a particle moving with simple harmonic motion is __________ at the mean position.

Which of the following statement is incorrect?

Static friction is always __________ dynamic friction.

The matter contained in a body, is called

In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

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

Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.

A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

A body will begin to move down an inclined plane if the angle of inclination of the plane is _________ the angle of friction.

The maximum frictional force which comes into play when a body just begins to slide over another surface is called

The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is

The rate of change of displacement of a body is called

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

Forces are called concurrent when their lines of action meet in

One watt is equal to

If a number of forces are acting at a point, their resultant is given by

Angle of friction is the

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

Which of the following is not the unit of distance?

If the gravitational acceleration at any place is doubled, then the weight of a body will be

The time of flight (t) of a projectile on a horizontal plane is given by

Centre of gravity of a solid cone lies on the axis at the height

Frictional force encountered after commencement of motion is called

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

Also checkout

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

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

A couple produces

In ideal machines

The velocity of a particle moving with simple harmonic motion is __________ at the mean position.

Which of the following statement is incorrect?

Static friction is always __________ dynamic friction.

The matter contained in a body, is called

In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

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

Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.

A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

A body will begin to move down an inclined plane if the angle of inclination of the plane is _________ the angle of friction.

The maximum frictional force which comes into play when a body just begins to slide over another surface is called

The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is

The rate of change of displacement of a body is called

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

Forces are called concurrent when their lines of action meet in

One watt is equal to

If a number of forces are acting at a point, their resultant is given by

Angle of friction is the

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

Which of the following is not the unit of distance?

If the gravitational acceleration at any place is doubled, then the weight of a body will be

The time of flight (t) of a projectile on a horizontal plane is given by

Centre of gravity of a solid cone lies on the axis at the height

Frictional force encountered after commencement of motion is called

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

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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.