Description : A cylinder roller creates lesser noise than a deep groove ball bearing. (a) True (b) False
Last Answer : (b) False
Description : Cylindrical roller bearing has a lower load capacity as compared to deep groove ball bearing. (a) True (b) False
Description : Cylinder roller creates lesser noise than deep groove ball bearing. a) True b) False
Last Answer : b) False
Description : Cylindrical load bearing has lower load capacity as compared to deep groove ball bearing. a) True b) False
Description : The deep groove ball bearing has immense rigidity. (a) True (b) No, it has point contact and hence low rigidity (c) It has surface contact (d) It has line contact
Last Answer : (b) No, it has point contact and hence low rigidity
Description : Deep groove ball bearing has immense rigidity. a) True b) No it has point contact and hence low rigidity c) It has surface contact d) It has line contact
Last Answer : b) No it has point contact and hence low rigidity
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 : Match List-I (Type of Anti-friction bearing) with List-II (Specific Use) and select the using the code given below the Lists: [IES-2006] List-I List -II A. Self-aligning ball bearing 1. For pure axial load B. Taper roller bearing 2. For ... C D (a) 2 1 3 4 (b) 3 4 2 1 (c) 2 4 3 1 (d) 3 1 2 4
Last Answer : (c) 2 4 3 1
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 : The purpose of lubrication in an antifriction bearing is (a) to reduce the friction between balls and races (b) dissipation of frictional heat prevention of corrosion (c) protection of the bearing from dirt and other foreign particles (d) all of the mentioned
Last Answer : (d) all of the mentioned
Description : Sliding contact bearings, also called plain bearings have no problem of wear. a) True b) False
Description : The life of an individual ball bearing is the time period for which it works without any signs of failures. (a) True (b) False
Description : The life of an individual ball bearing is the time period for which it works without any signs of failures. a) True b) False
Description : Which one of the following parts of a ball bearing acts as a barrier between the balls preventing them from bumping into each other? (a) Inner race (b) Outer race (c) Rolling element (d) Cage
Last Answer : (d) Cage
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 : Two small diameter 10gm dielectric balls can slide freely on a vertical channel. Each carry a negative charge of 1μC. Find the separation between the balls if the lower ball is restrained from moving. a) 0.5 b) 0.4 c) 0.3 d) 0.2
Last Answer : c) 0.3
Description : Type of welded joint which do not exit (i) Groove type (ii) Spot type (iii)Plug type (iv) Surface type
Last Answer : (iv) Surface type
Description : In which case, molten metal is used to do welding? (i) Groove type (ii) spot type (iii) Plug type (iv) None
Last Answer : (iii) Plug type
Description : A total permanent deformation of 0.0001 of the ball diameter is taken for considering the static load capacity of the sh (a) True (b) False
Last Answer : (a) True
Description : A total permanent deformation of 0.0001 of the ball diameter is taken for considering static load capacity of the shaft. a) True b) False
Last Answer : a) True
Description : An antifriction bearing consists of (a) rolling elements (b) races (c) cages (d) all of the listed
Last Answer : (d) all of the listed
Description : The construction feature which makes tapered roller bearings unique in that races are (a) attachable (b) separable (c) self-aligning (d) none of the mentioned
Last Answer : (b) separable
Description : Welded joints are a. Hinged joint b. Rigid joint c. Freely supported joint
Last Answer : b. Rigid joint
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
Description : A sliding contact bearing is operating under stable condition. The pressure developed in oil film is p when the journal rotates at N rpm. The dynamic viscosity of lubricant is μ and effective coefficient of ... to p and f) (d) f is directly proportional to μ and inversely proportional to N
Last Answer : (b) f is directly proportional to μ and N
Description : In sliding contact bearings, a positive pressure can be built up and a load supported by a fluid only by the use of a: [IES-2005] (a) Diverging film (b) Converging-diverging film (c) Converging film (d) Flat film
Last Answer : (c) Converging film
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
Description : Crests and roots of the threads may lead to leakage in fluid tight threads if flattened or rounded to a circular arc. a) True b) False
Description : Which of the following is an expression for the Stribeck equation? (Number of balls=z) (a) C=kd2z/5 (b) C=kd2z/10 (c) C=kd2z/15 (d) C=kd2z/20
Last Answer : (a) C=kd2z/5
Description : Which of the following is expression for stribeck equation?(Number of balls=z)? a) C=kd2z/5 b) C=kd2z/15 c) C=kd2z/10 d) None of the listed
Last Answer : a) C=kd2z/5
Description : What is a deep groove down in the ground?
Last Answer : Need answer
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)
Description : In comparison to MB plough, the draft is less in disc plough because a) It roll over the soil instead of sliding b) It has lower contact area c) It has larger cutting edge d) None of these Ans. a
Last Answer : ans a
Description : Keyed joints never lead to stress concentration on shafts. a) True b) False
Description : Feather key can be used to prevent axial motion between two elements. a) True b) False
Description : The operation of flywheel is continuous. a) True b) False
Description : Flywheel and governor can be interchanged. a) True b) False
Description : Flywheels are used in punching and shear operation. a) True b) False
Description : Is use of a flywheel recommended when a large motor is required only for a small instant of time? a) True b) False
Description : The dynamic load-carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. (a) True (b) False
Description : For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False
Description : Stribeck equation gives the dynamic load capacity of the bearing. (a) True (b) False
Description : Needles bearing consist of rollers of small diameter and very small length. (a) True (b) False
Description : Angular contact bearing can take thrust as well as radial loads. (a) True (b) False
Description : Assertion (A): Hydrostatic lubrication is more advantageous when compared to hydrodynamic lubrication during starting and stopping the journal in its bearing. Reason (R): In hydrodynamic lubrication, the fluid film pressure is ... (c) A is true but R is false (d) A is false but R is true
Last Answer : (b) Both A and R are individually true but R is not the correct explanation of A