Which of the following is a vector quantity?

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Which of the following is a vector quantity?

A. Energy

B. Mass

C. Momentum

D. Angle

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In ideal machines, mechanical advantage is __________ velocity ratio.

A. Equal to

B. Less than

C. Greater than

D. None of these

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A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The centre of gravity of the section will lie

A. In the shaded area

B. In the hole

C. At O

D. None of these

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When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

A. Directly proportional

B. Inversely proportional

C. Cube root

D. None of these

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The force, by which the body is attracted, towards the centre of the earth, is called

A. Impulsive force

B. Mass

C. Weight

D. Momentum

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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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In the shown figure, the tension (T) in the string will be

A. m₁. m₂. g/(m₁ + m₂)

B. 2m₁. m₂. g/(m₁ + m₂)

C. (m₁ + m₂)/ m₁. m₂. g

D. (m₁ + m₂)/2m₁. m₂. g

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The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h)

A. Less than

B. Greater than

C. Equal to

D. None of these

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The forces, which meet at one point, but their lines of action do not lie in a plane, are called

A. Coplanar non-concurrent forces

B. Non-coplanar concurrent forces

C. Non-coplanar non-concurrent forces

D. Intersecting forces

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If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

A. More inclined when moving

B. Less inclined when moving

C. More inclined when standing

D. Less inclined when standing

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The resolved part of the resultant of two forces inclined at an angle θ in a given direction is equal to

A. The algebraic sum of the resolved parts of the forces in the given direction

B. The sum of the resolved parts of the forces in the given direction

C. The difference of the forces multiplied by the cosine of θ

D. The sum of the forces multiplied by the sine of θ

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The unit of angular acceleration is

A. N-m

B. m/s

C. m/s2

D. rad/s2

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A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is

A. 0°

B. 30°

C. 45°

D. 60°

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Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then

A. Their algebraic sum is zero

B. Their lines of action are at equal distances

C. The algebraic sum of their moments about any point in their plane is zero

D. The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.

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Which is the correct statement about law of polygon of forces?

A. If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

B. If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

C. If a polygon representing forces acting at a point is closed then forces are in equilibrium

D. If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

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The angle between two forces when the resultant is maximum and minimum respectively are:

A. 0° and 180°

B. 180° and 0°

C. 90° and 180°

D. 90° and 0°

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

A. Potential energy

B. Kinetic energy

C. Electrical energy

D. Chemical energy

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The rate of doing work is known as

A. Potential energy

B. Kinetic energy

C. Power

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

A. D + d

B. D - d

C. D × d

D. D / d

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Dynamic friction as compared to static friction is

A. Same

B. More

C. Less

D. May be less of more depending on nature of surfaces and velocity

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The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)

A. [m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²

B. [2(m₁ + m₂)/m₁ m₂] (u₁ - u₂)²

C. [m₁ m₂/2(m₁ + m₂)] (u₁² - u₂²)

D. [2(m₁ + m₂)/m₁ m₂] (u₁² - u₂²)

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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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According to law of triangle of forces

A. Three forces acting at a point will be in equilibrium

B. Three forces acting at a point can be represented by a triangle, each side being proportional to force

C. If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

D. If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

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Pick up the incorrect statement from the following:

A. The C.G. of a circle is at its centre

B. The C.G. of a triangle is at the intersection of its medians

C. The C.G. of a rectangle is at the intersection of its diagonals

D. The C.G. of a semicircle is at a distance of r/2 from the centre

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When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

A. Simple pendulum

B. Compound pendulum

C. Torsional pendulum

D. Second's pendulum

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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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A framed structure, as shown in the below figure, is a

A. Perfect frame

B. Deficient frame

C. Redundant frame

D. None of the above

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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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The maximum acceleration of a particle moving with simple harmonic motion is

A. ω

B. ωr

C. ω²r

D. ω/r

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Accepted Answer

C. Momentum

Which of the following is a vector quantity?

Correct Answer :

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Related Questions

In ideal machines, mechanical advantage is __________ velocity ratio.

A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The centre of gravity of the section will lie

When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

The force, by which the body is attracted, towards the centre of the earth, is called

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

In the shown figure, the tension (T) in the string will be

The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h)

The forces, which meet at one point, but their lines of action do not lie in a plane, are called

If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

The resolved part of the resultant of two forces inclined at an angle θ in a given direction is equal to

The unit of angular acceleration is

A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is

Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then

Which is the correct statement about law of polygon of forces?

The angle between two forces when the resultant is maximum and minimum respectively are:

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

The rate of doing work is known as

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

Which of the following statement is correct?

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

Dynamic friction as compared to static friction is

The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)

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

According to law of triangle of forces

Pick up the incorrect statement from the following:

When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

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

A framed structure, as shown in the below figure, is a

Which of the following statement is incorrect?

The maximum acceleration of a particle moving with simple harmonic motion is

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Which of the following is a vector quantity?

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

In ideal machines, mechanical advantage is __________ velocity ratio.

A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The centre of gravity of the section will lie

When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

The force, by which the body is attracted, towards the centre of the earth, is called

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

In the shown figure, the tension (T) in the string will be

The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h)

The forces, which meet at one point, but their lines of action do not lie in a plane, are called

If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

The resolved part of the resultant of two forces inclined at an angle θ in a given direction is equal to

The unit of angular acceleration is

A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is

Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then

Which is the correct statement about law of polygon of forces?

The angle between two forces when the resultant is maximum and minimum respectively are:

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

The rate of doing work is known as

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

Which of the following statement is correct?

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

Dynamic friction as compared to static friction is

The loss of kinetic energy during inelastic impact, is given by (where m1 = Mass of the first body, m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)

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

According to law of triangle of forces

Pick up the incorrect statement from the following:

When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

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

A framed structure, as shown in the below figure, is a

Which of the following statement is incorrect?

The maximum acceleration of a particle moving with simple harmonic motion is

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The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)