Description : Ball bearings are used in cycles, scooters etc to -Physics
Last Answer : Reduce the friction between the wheel and the axle.
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.
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
Description : Front and rear wheel axle bearings may be washed and replaced once in a) four years b) three years c) two years d) one year
Last Answer : d) one year
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
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
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
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
Description : In a journal bearings, the radius of the friction circle increases with the increase in- [IES-1997] (a) Load (b) Radius of the journal (c) Speed of the journal (d) Viscosity of the lubricant
Last Answer : (b) Radius of the journal
Description : Is a screwdriver a kind of wheel and axle?
Last Answer : Need answer
Description : What equation would you to calculate the ideal mechanical advantage of a wheel and axle if the input force is on the axle?
Last Answer : Feel Free to Answer
Description : Is an example of a device that uses a wheel a device that uses a wheel and axle?
Last Answer : What is the answer ?
Description : Why is a skateboard a wheel and axle?
Last Answer : bum
Description : Where is the wheel and axle plant of Indian Railways situated? A. Hydrabad B. Bangalore C. Mumbai D. Jamshedpur
Last Answer : B [Bangalore] Explanation: Rail Wheel Factory, Yelehanka (RWF) (also known as Wheel and Axle Plant) is a manufacturing unit of Indian Railways, producing wheels, axles and wheel sets of ... for the use of Indian Railways and overseas customers is situated at Yelahanka, Bangalore in the Indian
Description : Design of highways is based on (A) Axle loads (B) Axle spacings (C) Wheel bases (D) All the above
Last Answer : Answer: Option D
Description : In disc brake, the disc is attached to the (A) wheel (B) axle (C) suspension system (D) none of the above
Last Answer : (B) axle
Description : A ball bearing is used in shafts of motors, dynamos to reduce ______. a) movement b)friction c)speed d)none
Last Answer : b)friction
Description : What size socket do you need to change the wheel bearings on 1998 GMC Jimmy front and back axles?
Last Answer : Need to know if 2 wheel or 4 wheel drive for the front. Eitherway, there is no nut on the back axles.
Description : Where can I get new wheel bearings?
Last Answer : The best place to get any auto parts or wheel bearings is from your auto car dealer, or Canadian tire they should have you wanted. From what I gather no prices were posted online.
Description : The reactive power drawn by a motor from an AC generator is the power which is _____________. A. used to establish the magnetic field of the motor B. lost in overcoming friction in the ... by current flow through the windings D. transmitted directly through the rotor shaft to perform useful work
Last Answer : Answer: A
Description : Babbitt metal used for making bearings should have (A) High co-efficient of friction between journal and bearing (B) Ability to retain lubricant on its surface (C) Low co-efficient of friction between journal and bearing (D) Both (B) & (C)
Last Answer : (A) High co-efficient of friction between journal and bearing
Description : The antifriction bearings (a) have low starting and low running friction at moderate speeds (b) have a high initial cost (c) can carry both radial and thrust loads (d) all the mentioned
Last Answer : (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
Description : Assertion (A): In anti-friction bearings, the frictional resistance is very low as the shaft held by it remains in floating condition by the hydrodynamic pressure developed by the lubricant. [IES-2006] Reason (R): In hydrodynamic ... of A (c) A is true but R is false (d) A is false but R is true
Last Answer : (d) A is false but R is true
Description : Which of the following are functions of bearings? a) Ensure free rotation of shaft with minimum friction b) Holding shaft in a correct position c) Transmit the force of the shaft to the frame d) All of the listed
Last Answer : d) All of the listed
Description : What Are The Reasons Of Over Heating On Anti-friction Bearings?
Last Answer : The main reasons are, inadequate lubrication ,overloading ,miss-alignment and bearing in defective condition.
Description : Explain Briefly About Friction And Anti-friction Bearings?
Last Answer : Friction bearings. This type of bearings contact that shaft directly such as bush bearing ,journal bearing etc. These bearings generally made of cast iron ,brass and gun metal. Anti-friction bearings. These type of bearings have rolling elements such as balls, rollers etc.
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
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
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.)
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
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
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
Description : Ball bearings are normally made of __________ steel. (A) High speed (B) High carbon (C) Chrome (D) Silicon
Last Answer : (C) Chrome
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Description : Where preloaded ball bearings used?
Last Answer : If more vibration exists even when machine is not in running conditions.
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