The coefficient of friction depends on

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The coefficient of friction depends on

A. Area of contact

B. Shape of surfaces

C. Strength of surfaces

D. Nature of surface

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The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

A. 50 mm

B. 75 mm

C. 87.5 mm

D. 125 mm

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When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

A. Inward

B. Outward

C. Towards front

D. Towards back

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When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

A. mv²

B. mgv²

C. 0.5 mv²

D. 0.5 mgv²

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The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

A. D/(D - d)

B. D/(D + d)

C. 2D/(D - d)

D. 2D/(D + d)

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The total motion possessed by a body, is called

A. Impulsive force

B. Mass

C. Weight

D. Momentum

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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.)

A. P = mW - C

B. P = m/W + C

C. P = mW + C

D. P = C - mW

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A screw jack used for lifting the loads is

A. A reversible machine

B. A non-reversible machine

C. An ideal machine

D. None of these

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

A. Coplanar concurrent forces

B. Coplanar non-concurrent forces

C. Non-coplanar concurrent forces

D. Non-coplanar non-concurrent forces

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The maximum efficiency of a lifting machine is

A. 1/m

B. V.R./m

C. m/V.R.

D. 1/(m × V.R.)

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According to principle of moments

A. If a system of coplanar forces is in equilibrium, then their algebraic sum is zero

B. If a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

C. The algebraic sum of the moments of any two forces about any point is equal to moment of the resultant about the same point

D. Positive and negative couples can be balanced

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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 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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Two non-collinear parallel equal forces acting in opposite direction

A. Balance each other

B. Constitute a moment

C. Constitute a couple

D. Constitute a moment of couple

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From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

A. 0.5 cm

B. 1.0 cm

C. 1.5 cm

D. 2.5 cm

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

A. Angle of friction

B. Angle of repose

C. Angle of banking

D. None of these

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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

A. 50

B. 100

C. 200

D. 400

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The resultant of two equal forces P making an angle θ, is given by

A. 2P sinθ/2

B. 2P cosθ/2

C. 2P tanθ/2

D. 2P cotθ/2

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The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

A. (1/2π). √(l/g)

B. (1/2π). √(g/l)

C. 2π. √(l/g)

D. None of these

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During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

A. Equal to

B. Equal and opposite to

C. Less than

D. Greater than

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

A. A path, traced by a projectile in the space, is known as trajectory.

B. The velocity, with which a projectile is projected, is known as the velocity of projection.

C. The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.

D. All of the above

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A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

A. 6t² - 8t

B. 3t² + 2t

C. 6f - 8

D. 6f - 4

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Joule is the unit of

A. Force

B. Work

C. Power

D. Velocity

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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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According to Lamis theorem

A. The three forces must be equal

B. The three forces must be at 120° to each other

C. The three forces must be in equilibrium

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

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The unit of force in S.I. units is

A. kilogram

B. Newton

C. Watt

D. Dyne

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The length of a second's pendulum is

A. 94.9 cm

B. 99.4 cm

C. 100 cm

D. 101 cm

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Center of percussion is

A. The point of C.G.

B. The point of metacenter

C. The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis

D. Point of suspension

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A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

A. Circular arc

B. Parabola

C. Hyperbola

D. Elliptical

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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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Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

A. 15 N and 5 N

B. 20 N and 5 N

C. 15 N and 15 N

D. None of these

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Accepted Answer

D. Nature of surface

The coefficient of friction depends on

Correct Answer :

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Related Questions

The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

The total motion possessed by a body, is called

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.)

A screw jack used for lifting the loads is

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

The maximum efficiency of a lifting machine is

According to principle of moments

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

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.)

Two non-collinear parallel equal forces acting in opposite direction

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

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

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

The resultant of two equal forces P making an angle θ, is given by

The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

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

A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

Joule is the unit of

The unit of angular acceleration is

According to Lamis theorem

The unit of force in S.I. units is

The length of a second's pendulum is

Center of percussion is

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

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

Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

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The coefficient of friction depends on

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

The total motion possessed by a body, is called

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.)

A screw jack used for lifting the loads is

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

The maximum efficiency of a lifting machine is

According to principle of moments

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

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.)

Two non-collinear parallel equal forces acting in opposite direction

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

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

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

The resultant of two equal forces P making an angle θ, is given by

The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

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

A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

Joule is the unit of

The unit of angular acceleration is

According to Lamis theorem

The unit of force in S.I. units is

The length of a second's pendulum is

Center of percussion is

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

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

Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

Also checkout

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.)