Friction can be reduced by changing over from _____. A. Sliding to rolling B. Dynamic to static C. Potential energy to kinetic energy D. Rolling to sliding

Friction can be reduced by changing over from _____. A. Sliding to rolling B. Dynamic to static C. Potential energy to kinetic energy D. Rolling to sliding
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The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as a.Kinetic friction b.Rolling friction c.Dynamic friction d.Limiting friction e.Sliding friction

Description : The maximum frictional force which comes into play when a body just begins to slide over the surface of another body is known as a.Kinetic friction b.Rolling friction c.Dynamic friction d.Limiting friction e.Sliding friction

Last Answer : d. Limiting friction

A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Proportional to the coefficient of static friction b.Proportional to the coefficient of dynamic friction c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

Last Answer : c. Indeterminate

A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Indeterminate b.Proportional to the coefficient of dynamic friction c.Determinate but depends on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

Last Answer : c. Determinate but depends on the acceleration of the cylinder

The function of ball bearings in a wheel is – (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Description : The function of ball bearings in a wheel is – (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Last Answer : (2) to convert kinetic friction into rolling friction Explanation: A ball bearing is a type of rollingelement bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads.

The function of ball bearings in a wheel is : (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Description : The function of ball bearings in a wheel is : (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Last Answer : to convert kinetic friction into rolling friction

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

Description : 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

Last Answer : (A) Limiting friction

It is easier to roll a barrel than to pull it because (a) the full weight of the barrel comes into play when it is pulled (b) rolling friction is much less than sliding friction (c) the surface area of the barrel in contact with the road is more in the case of pulling (d) of a reason other than those mentioned

Description : It is easier to roll a barrel than to pull it because (a) the full weight of the barrel comes into play when it is pulled (b) rolling friction is much less than sliding friction (c) the surface ... in contact with the road is more in the case of pulling (d) of a reason other than those mentioned

Last Answer : Ans:(b)

The rolling contact bearings as compared to sliding contact bearings have (a) small overall dimensions (b) accuracy of shaft alignment (c) low starting and low running friction except at very high speeds (d) all the mentioned

Description : The rolling contact bearings as compared to sliding contact bearings have (a) small overall dimensions (b) accuracy of shaft alignment (c) low starting and low running friction except at very high speeds (d) all the mentioned

Last Answer : (d) all the mentioned

Static friction is always a.greater than the dynamic driction b.either greater or more than the dynamic friction c.less than the dynamic friction d.107 dynes e.equal to the dynamic friction

Description : Static friction is always a.greater than the dynamic driction b.either greater or more than the dynamic friction c.less than the dynamic friction d.107 dynes e.equal to the dynamic friction

Last Answer : a. greater than the dynamic driction

A piezometer provided in the pipe measures (A) Friction factor (B) Static pressure (C) Dynamic pressure (D) None of these

Description : A piezometer provided in the pipe measures (A) Friction factor (B) Static pressure (C) Dynamic pressure (D) None of these

Last Answer : (B) Static pressure

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

Description : 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 

Last Answer : (C) Less 

Dynamic friction as compared to static friction is?

Description : Dynamic friction as compared to static friction is?

Last Answer : Dynamic  friction  is   less  compared  to  static  friction.

What is friction? Define coefficient of static friction and coefficient of kinetic friction.

Description : What is friction? Define coefficient of static friction and coefficient of kinetic friction.

Last Answer : What is friction? Define coefficient of static friction and coefficient of kinetic friction. Give the necessary formula for each.

What is kinetic friction and static friction?

Description : What is kinetic friction and static friction?

Last Answer : Friction is the resistance to movement of an object pressing/resting/moving on a surface. It's not intuitively obvious but the standing still friction and moving friction are different. Assume you have a ... than the force required to keep it moving (kinetic friction) after it has begun to move.

Kinetic friction is always A. lesser than static friction B. greater than static friction C. equal to static friction D. equal to contact force

Description : Kinetic friction is always A. lesser than static friction B. greater than static friction C. equal to static friction D. equal to contact force

Last Answer : lesser than static friction

A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its potential energy (with respect to the bottom of the plane) when it was at the top of the plane y) less than its kinetic energy at the top of the plane z) dependant on the materials of which the block is made

Description : A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its ... kinetic energy at the top of the plane z) dependant on the materials of which the block is made 

Last Answer : ANSWER: X -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.

11. The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium. A) Agree B) Disagree

Description : 11. The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium. A) Agree B) Disagree

Last Answer : A

A journal bearing is a ______ contact bearing working on the hydrodynamic lubrication and which supports load in____ direction. a) Sliding, Axial b) Rolling, Radial c) Sliding, Radial d) Rolling, Axial

Description : A journal bearing is a ______ contact bearing working on the hydrodynamic lubrication and which supports load in____ direction. a) Sliding, Axial b) Rolling, Radial c) Sliding, Radial d) Rolling, Axial

Last Answer : c) Sliding, Radial

The principle of conservation of energy cannot be applied in case of a.Flow of heat through a metal b.Ideal flow of water in a pipe c.Simple pendulum d.Sliding of a particle along inclined plane with friction e.A particle moving in gravitational field

Description : The principle of conservation of energy cannot be applied in case of a.Flow of heat through a metal b.Ideal flow of water in a pipe c.Simple pendulum d.Sliding of a particle along inclined plane with friction e.A particle moving in gravitational field

Last Answer : e. A particle moving in gravitational field

Ball "A" ROLLS down an inclined plane without slipping. An identical ball, Ball "B", SLIDES down the same inclined plane without rolling. Which of the following statements is true? w) Ball "A" has more kinetic energy x) Ball "B" has more kinetic energy y) their kinetic energies are the same z) their rotational kinetic energies are equal just after release

Description : Ball "A" ROLLS down an inclined plane without slipping. An identical ball, Ball "B", SLIDES down the same inclined plane without rolling. Which of the following statements is true? w) Ball ... y) their kinetic energies are the same z) their rotational kinetic energies are equal just after release  

Last Answer : ANSWER: Y -- THEIR KINETIC ENERGIES ARE THE SAME

Pick up wrong statement about friction force for dry surfaces. Friction force is (A) Proportional to normal load between the surfaces (B) Dependent on the materials of contact surface (C) Proportional to velocity of sliding (D) Independent of the area of contact surfaces

Description : Pick up wrong statement about friction force for dry surfaces. Friction force is  (A) Proportional to normal load between the surfaces  (B) Dependent on the materials of contact surface  (C) Proportional to velocity of sliding  (D) Independent of the area of contact surfaces 

Last Answer : (C) Proportional to velocity of sliding 

The ratio of limiting friction and normal reaction is known as (A) Coefficient of friction (B) Angle of friction (C) Angle of repose (D) Sliding friction

Description : The ratio of limiting friction and normal reaction is known as (A) Coefficient of friction (B) Angle of friction (C) Angle of repose (D) Sliding friction

Last Answer : (A) Coefficient of friction

Is rolling down a grassy hill kinetic or potiental?

Description : Is rolling down a grassy hill kinetic or potiental?

Last Answer : Any time something falls, rolls, or slides down, gravitationalpotential energy is converted into kinetic energy.

Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by the force of adhesion between liquid molecules c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Description : Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by ... it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Last Answer : c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions

Good design of the casing of a centrifugal pump aims at minimising the (A) Cavitation (B) Frictional losses (C) Kinetic energy loss (D) Static head

Description : Good design of the casing of a centrifugal pump aims at minimising the (A) Cavitation (B) Frictional losses (C) Kinetic energy loss (D) Static head

Last Answer : Option C

The RUP is normally described from three perspectives- dynamic, static& practice. What does static perspective do? a) It shows the process activities that are enacted. b) It suggests good practices to be used during the process. c) It shows the phases of the model over time.

Description : The RUP is normally described from three perspectives- dynamic, static& practice. What does static perspective do? a) It shows the process activities that are enacted. b) It suggests good practices to be used during the process. c) It shows the phases of the model over time.

Last Answer : a) It shows the process activities that are enacted.

The advantage of dynamic RAMs over static RAMs is

Description : The advantage of dynamic RAMs over static RAMs is  1. Lower power consumption 2. Higher power consumption 3. Higher packing density 4. Lower packing density

Last Answer : The advantage of dynamic RAMs over static RAMs is  1. Lower power consumption 2. Higher power consumption 3. Higher packing density 4. Lower packing density

What is rolling friction? How does it arise?

Description : What is rolling friction? How does it arise?

Last Answer : What is rolling friction? How does it arise?

Force ( including rolling resistance friction ) that acts upon the stabilising surfaces such landslide and sole of bottom are called a) Useful soil resistance b) Parasitic force d) Draft of implement. d) Pull of implement

Description : Force ( including rolling resistance friction ) that acts upon the stabilising surfaces such landslide and sole of bottom are called a) Useful soil resistance b) Parasitic force d) Draft of implement. d) Pull of implement

Last Answer : b) Parasitic force

In the impact problems the following conditions must always be satisfied a.The total kinetic energy remains unchanged b.The total linear momentum remains unchanged c.The magnitude of the total linear momentum is multiplied by the coefficient of restitution d.The kinetic energy of the system is reduced by a factor proportional to the coefficient of restitution e.None of the above

Description : In the impact problems the following conditions must always be satisfied a.The total kinetic energy remains unchanged b.The total linear momentum remains unchanged c.The magnitude of the total linear ... is reduced by a factor proportional to the coefficient of restitution e.None of the above

Last Answer : b. The total linear momentum remains unchanged

Frictional force encountered after commencement of motion is called (A) Post friction (B) Limiting friction (C) Kinematic friction (D) Dynamic friction

Description : Frictional force encountered after commencement of motion is called  (A) Post friction  (B) Limiting friction  (C) Kinematic friction  (D) Dynamic friction 

Last Answer : (D) Dynamic friction 

Kinetic friction is a.Maximum value of frictional force when a body is about to move b.Friction between two well lubricated bodies c.Friction force acting when the body is in motion d.Driction force which keeps a body in motion e.None of the above

Description : Kinetic friction is a.Maximum value of frictional force when a body is about to move b.Friction between two well lubricated bodies c.Friction force acting when the body is in motion d.Driction force which keeps a body in motion e.None of the above

Last Answer : c. Friction force acting when the body is in motion

State the laws of kinetic friction.

Description : State the laws of kinetic friction.

Last Answer : State the laws of kinetic friction.

What would cause the force of kinetic friction to increase?

Description : What would cause the force of kinetic friction to increase?

Last Answer : an increase in uk (apex)

A block of mass m is pulled along a surface as shown. The coefficient of kinetic friction between the block and the surface is m and the tension in the rope is T. The acceleration of the block is (a) a = T cos q/mg (b) a = T cos q/mgm (c) a = T cos q/m + mmg (d) None of the above

Description : A block of mass m is pulled along a surface as shown. The coefficient of kinetic friction between the block and the surface is m and the tension in the rope is T. The acceleration of the block is (a) a = T cos q/mg (b) a = T cos q/mgm (c) a = T cos q/m + mmg (d) None of the above

Last Answer : Ans:(d)

In case of a pipe exit fitted with a nozzle, the (A) Conversion of kinetic head to pressure head is facilitated (B) Conversion of pressure head to kinetic head is facilitated (C) Power transmitted through the nozzle is maximum, when the head lost due to friction in the pipe is equal to one third of the total supply head (D) Both (B) and (C)

Description : In case of a pipe exit fitted with a nozzle, the (A) Conversion of kinetic head to pressure head is facilitated (B) Conversion of pressure head to kinetic head is facilitated (C) Power transmitted through the nozzle ... in the pipe is equal to one third of the total supply head (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Tangent of angle of friction is equal to (A) Kinetic friction (B) Limiting friction (C) Angle of repose (D) Coefficient of friction

Description : Tangent of angle of friction is equal to (A) Kinetic friction (B) Limiting friction (C) Angle of repose (D) Coefficient of friction

Last Answer : (D) Coefficient of friction

Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force acting when the body is just about to move (D) The friction force acting when the body is in motion

Description : Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force ... body is just about to move (D) The friction force acting when the body is in motion

Last Answer : (D) The friction force acting when the body is in motion

Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x) Ice readily sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator

Description : Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x ... sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator 

Last Answer : ANSWER: Y -- THE MELTING POINT DECREASES WITH INCREASING PRESSURE 

Kinetic friction is the?

Description : Kinetic friction is the?

Last Answer : Kinetic friction is the friction force acting when the body is in motion.

Where can I find dynamic (animated) comics (NOT the static pictures!), if possible free?

Description : Where can I find dynamic (animated) comics (NOT the static pictures!), if possible free?

Last Answer : hmmmmmm. Not exactly what you’re looking for, but you might check out the current MSPA

To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that arecalled a.static elements b.dynamic elements c.infinite elements d.finite elements

Description : To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that arecalled a.static elements b.dynamic elements c.infinite elements d.finite elements

Last Answer : d.finite elements

Show the difference between a static website and a dynamic website. ?

Description : Show the difference between a static website and a dynamic website. ?

Last Answer : answer:

Static Website And Dynamic Of the website In The difference What ?

Description : Static Website And Dynamic Of the website In The difference What ?

Last Answer : Static Website: That The web On the site Data The value On the webpage Loading Or On To do After Change To do Goes No. Him Static The web Site Says. Static Of the website Features : # Cost Less ... is. # Cost More #comparable _ Way More Safe #attractive _, Interactive Lay - out Made To do Goes.

What is the difference between static and dynamic website?

Description : What is the difference between static and dynamic website?

Last Answer : The static web pages display the same content each time when someone visits it, whereas in dynamic web pages takes more time while loading.

Difference between static, responsive, dynamic and a CMS websites?

Description : Difference between static, responsive, dynamic and a CMS websites?

Last Answer : Static websites are just files which do not interact with the database or does not require active requests from the CDN or the server. Responsive websites are those who adjust their layout ... the active connection with the data and requires constant request and response approach with the server.

What's the difference between a dynamic site and a static one?

Description : What's the difference between a dynamic site and a static one?

Last Answer : Static Web pages often look the same, and rarely change the text. You must create the page yourself or request a Web designer to make a change for you. You must then upload the newly ... sites will reduce the ongoing maintenance costs. Typically they cost more to build, because they require m

Which term is used to describe RAM? A) Dynamic RAM (DRAM) B) Static RAM (SRAM) C) Video RAM (VRAM) D) All of the above

Description : Which term is used to describe RAM? A) Dynamic RAM (DRAM) B) Static RAM (SRAM) C) Video RAM (VRAM) D) All of the above

Last Answer : Answer : D