Ball bearings are used in cycles, scooters etc to -Physics

Ball bearings are used in cycles, scooters etc to -Physics
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Reduce the friction between the wheel and the axle.
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Ball bearings are used in cycles, scooters etc. to _____. A. Reduce the friction between the wheel and the axle B. Increase the friction between the wheel and the axle C. Reduce the friction between ground and the wheel D. None of these

Description : Ball bearings are used in cycles, scooters etc. to _____. A. Reduce the friction between the wheel and the axle B. Increase the friction between the wheel and the axle C. Reduce the friction between ground and the wheel D. None of these

Last Answer : ANSWER: A

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

Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Description : Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Last Answer : ANSWER: ARTHUR HOLLY COMPTON

The units of frequency factor in Arrhenius equation (A) Are the same as those of the rate constant (B) Depend on the order of the reaction (C) Depend on temperature, pressure etc. of the reaction (D) Are cycles per unit time

Description : The units of frequency factor in Arrhenius equation (A) Are the same as those of the rate constant (B) Depend on the order of the reaction (C) Depend on temperature, pressure etc. of the reaction (D) Are cycles per unit time

Last Answer : (A) Are the same as those of the rate constant

How do I rejuvinate ball bearings?

Description : How do I rejuvinate ball bearings?

Last Answer : If they are ceramic, forget it. They are toast. If they are steel you can soak them in kerosene to get rid of the bits and old grease and then repack with new grease . If you don’t have kerosene you can spray with carb cleaner. (The link I included is for cars but it is still true for longboards.)

The failure of ball bearings used in electric motors can result from _____________. A. failure to clean the bearing before repacking B. failure to maintain proper alignment C. excess lubrication forcing the bearing full of grease and eliminating all areas of expansion D. all of the above

Description : The failure of ball bearings used in electric motors can result from _____________. A. failure to clean the bearing before repacking B. failure to maintain proper alignment C. excess lubrication forcing the bearing full of grease and eliminating all areas of expansion D. all of the above

Last Answer : Answer: D

When removing ball or roller bearings from the shaft of a motor, you should use a _____________. A. rawhide hammer B. brass mallet C. wheel puller D. soft iron pry bar

Description : When removing ball or roller bearings from the shaft of a motor, you should use a _____________. A. rawhide hammer B. brass mallet C. wheel puller D. soft iron pry bar

Last Answer : Answer: C

The only point in the steering stand shown in the illustration which needs periodic lubrication is the ______________. EL-0098 A. repeater assembly ball bearings B. steering wheel bearing C. operation selector switch D. course selector pointer

Description : The only point in the steering stand shown in the illustration which needs periodic lubrication is the ______________. EL-0098 A. repeater assembly ball bearings B. steering wheel bearing C. operation selector switch D. course selector pointer

Last Answer : Answer: B

Ball bearings are generally made of (A) Plain carbon steel (B) Chrome carbon steel (C) Stainless steel (D) Malleable cast iron

Description : Ball bearings are generally made of (A) Plain carbon steel (B) Chrome carbon steel (C) Stainless steel (D) Malleable cast iron

Last Answer : (B) Chrome carbon steel

Steel balls for ball bearings are generally made of __________ steel. (A) Cast (B) Stainless (C) Free carbon (D) Carbon chrome

Description : Steel balls for ball bearings are generally made of __________ steel. (A) Cast (B) Stainless (C) Free carbon (D) Carbon chrome

Last Answer : (D) Carbon chrome

Ball bearings are normally made of __________ steel. (A) High speed (B) High carbon (C) Chrome (D) Silicon

Description : Ball bearings are normally made of __________ steel. (A) High speed (B) High carbon (C) Chrome (D) Silicon

Last Answer : (C) Chrome

Ball bearings are, usually, made from (a) low carbon steel (b) high carbon steel (c) medium carbon steel (d) chrome steel

Description : Ball bearings are, usually, made from (a) low carbon steel (b) high carbon steel (c) medium carbon steel (d) chrome steel

Last Answer : (d) chrome steel

The ball bearing is subjected to a radial load of 4000 N. Expected life for 90% bearings is 9000 hr and the shaft is rot (a) 42.21 kN (b) 37.29 kN (c) 26.33 kN (d) 35.22 kN

Description : The ball bearing is subjected to a radial load of 4000 N. Expected life for 90% bearings is 9000 hr and the shaft is rot (a) 42.21 kN (b) 37.29 kN (c) 26.33 kN (d) 35.22 kN

Last Answer : (b) 37.29 kN

Which of the following cannot tolerate misalignment? (a) Angular contact bearing (b) Cylinder roller bearing (c) Thrust ball bearings (d) All of the listed

Description : Which of the following cannot tolerate misalignment? (a) Angular contact bearing (b) Cylinder roller bearing (c) Thrust ball bearings (d) All of the listed

Last Answer : (d) All of the listed

Which of the bearings given below SHOULD NOT be subjected to a thrust load? (a) Deep groove ball bearing (b) Angular contact ball bearing (c) Cylindrical (straight) roller bearing (d) Single row tapered roller bearing

Description : Which of the bearings given below SHOULD NOT be subjected to a thrust load? (a) Deep groove ball bearing (b) Angular contact ball bearing (c) Cylindrical (straight) roller bearing (d) Single row tapered roller bearing

Last Answer : (c) Cylindrical (straight) roller bearing

Deep groove ball bearings are used for (a) heavy thrust load only (b) the small angular displacement of shafts (c) radial load at high speed (d) combined thrust and radial loads at high speed

Description : Deep groove ball bearings are used for (a) heavy thrust load only (b) the small angular displacement of shafts (c) radial load at high speed (d) combined thrust and radial loads at high speed

Last Answer : (d) combined thrust and radial loads at high speed

There is a problem of alignment in deep groove ball bearings. (a) Yes (b) No, it is self-aligning (c) It aligns itself only in some particular cases (d) Can’t be determined

Description : There is a problem of alignment in deep groove ball bearings. (a) Yes (b) No, it is self-aligning (c) It aligns itself only in some particular cases (d) Can’t be determined

Last Answer : (a) Yes

Deep groove ball bearings create a lot of noise. (a) Yes (b) Depends on the application (c) They create very less noise (d) No reference frame for comparison is mentioned

Description : Deep groove ball bearings create a lot of noise. (a) Yes (b) Depends on the application (c) They create very less noise (d) No reference frame for comparison is mentioned

Last Answer : (c) They create very less noise

Antifriction bearings are (a) thick lubricated bearings (b) plastic bearings (c) ball and roller bearings (d) thin lubricated bearings

Description : Antifriction bearings are (a) thick lubricated bearings (b) plastic bearings (c) ball and roller bearings (d) thin lubricated bearings

Last Answer : (c) ball and roller bearings

The ball bearings are provided with a cage (a) to reduce friction (b) to facilitate slipping of balls (c) to prevent the lubricant from flowing out (d) to maintain the balls at a fixed distance apart

Description : The ball bearings are provided with a cage (a) to reduce friction (b) to facilitate slipping of balls (c) to prevent the lubricant from flowing out (d) to maintain the balls at a fixed distance apart

Last Answer : (d) to maintain the balls at a fixed distance apart

Match List -I (Bearings) with List-II (Applications) and select the using the codes given below the lists: [IAS-1998] List –I List-II A. Journal bearing 1. Electric motors B. Thrust bearing 2. Watches C. Conical pivot bearing 3. Marine engines D. Ball bearing 4. Swivelling chairs A B C D A B C D (a) 3 4 1 2 (b) 4 2 1 3 (c) 3 4 2 1 (d) 4 2 3 1

Description : Match List -I (Bearings) with List-II (Applications) and select the using the codes given below the lists: [IAS-1998] List -I List-II A. Journal bearing 1. Electric motors B. Thrust bearing 2. Watches C. Conical pivot bearing 3. Marine ... D (a) 3 4 1 2 (b) 4 2 1 3 (c) 3 4 2 1 (d) 4 2 3 1

Last Answer : (c) 3 4 2 1

Which one of the following pair is correctly matched? [IES-2000] (a) Beauchamp tower ........................First experiments on journal bearings (b) Osborne Reynolds ........................Antifriction bearings (c) Somerfield number........................Pivot and Collar bearings (d) Ball bearings...............................Hydrodynamic lubrication

Description : Which one of the following pair is correctly matched? [IES-2000] (a) Beauchamp tower ........................First experiments on journal bearings (b) Osborne Reynolds ........................ ... .Pivot and Collar bearings (d) Ball bearings...............................Hydrodynamic lubrication

Last Answer : (a) Beauchamp tower ........................First experiments on journal bearings

Match List I with List II and select the : [IES-2002] List I (Bearings) List II (Load type) A. Hydrodynamic Journal bearing 1. High radial and thrust load combined B. Rectangular Hydrostatic bearing 2. Radial load only C. Taper Roller bearing 3. Thrust load only D. Angular contact ball bearing 4. Medium to low radial and thrust combined A B C D A B C D (a) 2 3 1 4 (b) 4 1 3 2 (c) 2 1 3 4 (d) 4 3 1 2

Description : Match List I with List II and select the : [IES-2002] List I (Bearings) List II (Load type) A. Hydrodynamic Journal bearing 1. High radial and thrust load combined B. Rectangular Hydrostatic bearing 2. Radial load only C. Taper Roller ... (a) 2 3 1 4 (b) 4 1 3 2 (c) 2 1 3 4 (d) 4 3 1 2

Last Answer : (a) 2 3 1 4

Which of the following cannot tolerate misalignment? a) Angular contact bearing b) Cylinder roller bearing c) Thrust ball bearings d) All of the listed

Description : Which of the following cannot tolerate misalignment? a) Angular contact bearing b) Cylinder roller bearing c) Thrust ball bearings d) All of the listed

Last Answer : d) All of the listed

There is problem of alignment in deep groove ball bearings. a) Yes b) No, it is self-aligning c) It aligns itself only in some particular cases d) Can’t be determined

Description : There is problem of alignment in deep groove ball bearings. a) Yes b) No, it is self-aligning c) It aligns itself only in some particular cases d) Can’t be determined

Last Answer : a) Yes

Deep groove ball bearings creates a lot of noise. a) Yes b) They create very less noise c) Depends on the application d) No reference frame for comparison is mentioned

Description : Deep groove ball bearings creates a lot of noise. a) Yes b) They create very less noise c) Depends on the application d) No reference frame for comparison is mentioned

Last Answer : b) They create very less noise

Where preloaded ball bearings used?

Description : Where preloaded ball bearings used? 

Last Answer : If more vibration exists even when machine is not in running conditions.  

The bearings which resist radial loads is known as a) Ball bearing b) bush bearing c) thrust bearing d) journal bearing

Description : The bearings which resist radial loads is known as a) Ball bearing b) bush bearing c) thrust bearing d) journal bearing

Last Answer : d) journal bearing

When did the first ball bearings Skates came into life?

Description : When did the first ball bearings Skates came into life?

Last Answer : Ans. December 9th 1884.

Molybdenum steels containing 0.15 to 0.40% molybdenum (A) Are prone to temper brittleness (B) Are used for automobile parts like gears, axle, shaft, bearings etc. (C) Have very poor fatigue resistance

Description : Molybdenum steels containing 0.15 to 0.40% molybdenum (A) Are prone to temper brittleness (B) Are used for automobile parts like gears, axle, shaft, bearings etc. (C) Have very poor fatigue resistance

Last Answer : (B) Are used for automobile parts like gears, axle, shaft, bearings etc

Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Description : Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Last Answer : (3) it forms smaller image as compared with object Explanation: It is because image formed by an convex mirror is always virtual, erect and smaller than the object.

Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Description : Convex mirrors are used as a rear view mirror in motor cycles because (1) it forms real image (2) it forms erect (upright) image (3) it forms smaller image as compared with object (4) All of the above

Last Answer : it forms smaller image as compared with object

How are public access e-scooters and e-bikes that are scattered all over the city maintained?

Description : How are public access e-scooters and e-bikes that are scattered all over the city maintained?

Last Answer : They’ve been very controversial. There are lots of articles on rental scooters that you’ll find if you google them. But yes, people do collect them at night and recharge them as contractors to the rental companies, if the scooters haven’t been stripped, dismantled, or thrown into a body of water.

Can someone give me some advice about motorcycles/scooters?

Description : Can someone give me some advice about motorcycles/scooters?

Last Answer : Ok well this is a simple question with a complicated answer so here goes . For transportation on freeways they are all equally unsafe. You are not protected at all except for what gear you wear. I recommend ... or learn to do it yourself. They are not like cars , they require a little more TLC.

Why are motor scooters illegal on California freeways?

Description : Why are motor scooters illegal on California freeways?

Last Answer : Because they cannot go freeway speeds. There are scooters that are freeway legal, they have larger engines and can maintain 55 mph. In California the engine has to be at least 150 cc.

Why do people on bicycles and scooters feel that they don't need to follow the laws of the road?

Description : Why do people on bicycles and scooters feel that they don't need to follow the laws of the road?

Last Answer : answer:I don't know what others think, but I'll tell you my thinking. I will blow through stop signs and red lights and I'll play a kind of eyeball chicken with motorists when I'm riding my bike. ... don't have a problem acting as if we are privileged, so long as we can do it without undue risk.

Why do dogs who don't bark at pedestrians or cars bark at bicycles or scooters?

Description : Why do dogs who don't bark at pedestrians or cars bark at bicycles or scooters?

Last Answer : my brother says "it rattles their kishkes" -- in plain english, i think it's the vibration.

Find the ratio between the total number of vehicles sold (scooters and cars) in the year 2006 and that in the year 2008.

Description : Find the ratio between the total number of vehicles sold (scooters and cars) in the year 2006 and that in the year 2008.

Last Answer : Find the ratio between the total number of vehicles sold (scooters and cars) in the year 2006 and that in the year ... ` C. `147 : 182` D. `46 : 49`

Find the total number of scooters sold in the four years.

Description : Find the total number of scooters sold in the four years.

Last Answer : Find the total number of scooters sold in the four years. A. 26000 B. 27000 C. 31000 D. 32000

Find the maximum difference between sales of scooters and that of cars, in ant year, in the given period.

Description : Find the maximum difference between sales of scooters and that of cars, in ant year, in the given period.

Last Answer : Find the maximum difference between sales of scooters and that of cars, in ant year, in the given period. A. 1500 B. 1700 C. 1800 D. 2000

Total number of vehicles (scooters and cars) sold in the year 2005 and 2006 is ______.

Description : Total number of vehicles (scooters and cars) sold in the year 2005 and 2006 is ______.

Last Answer : Total number of vehicles (scooters and cars) sold in the year 2005 and 2006 is ______. A. 26100 B. 28500 C. 25100 D. 27500

In which year is the difference between the sales of the scooters and the sales of cars the least ?

Description : In which year is the difference between the sales of the scooters and the sales of cars the least ?

Last Answer : In which year is the difference between the sales of the scooters and the sales of cars the least ? A. 2005 B. 2006 C. 2007 D. 2008

Mobility Scooters Increase Independence?

Description : Mobility Scooters Increase Independence?

Last Answer : Mobility scooters have given senior citizens and others who havetrouble walking for long periods of time a new level ofindependence. People who used to be trapped by immobility can nowget around as ... . Mobilityscooters may not move very quickly, but they go faster than mostpeople walk, which

Is there a weight limit for mobility scooters?

Description : Is there a weight limit for mobility scooters?

Last Answer : After doing some research it seems that most mobility scooters have a 300 pound weight limit. If you are more than that, or close to that, they do have other options.

How much do disability scooters cost?

Description : How much do disability scooters cost?

Last Answer : Disability scooters come in a variety of sizes, from travel-sized to full size models. For a full-size model, expect to pay between $15,000 and $22,000 dollars.

Is the cost of disability scooters covered by Medicare?

Description : Is the cost of disability scooters covered by Medicare?

Last Answer : If your doctor deems that a scooter is medically necessary for you, then Medicare Part B will cover most of the cost. Here is a good article that outlines it very well http://www.medicare.com/equipment-and-supplies/electric-mobility-scooters.html

Are electric scooters safe for 8 year olds?

Description : Are electric scooters safe for 8 year olds?

Last Answer : Yes, but you have to purchase a child's electric scooter, not one that is made for an adult. Just make sure your child wears the appropriate safety gear while riding.

Where could I find mobility scooters for customers to use in my store?

Description : Where could I find mobility scooters for customers to use in my store?

Last Answer : Shoprider makes these sorts of scooters for stores. You can buy them through their website http://shopridermobilityscooter.co.cc/. Mart Cart (http://www.martcart.com/) claims to have the number one ... also find them at http://www.dickensenterprises.com/amigo.html and http://www.amigoshopper.com/

How fast can an electric scooters travel?

Description : How fast can an electric scooters travel?

Last Answer : Most electric scooters travel between 10-20 mph on average. If the rider is light they will go about 20-30 at maximum depending what type you have bought. If it is a stand up scooter it will go 15- ... some that go upwards of fifty miles per hour. It all depends on the make and model of the scooter.