Description : In cold riveting like hot riveting shank is subjected to majorly tensile stress. a) True b) False
Last Answer : b) False
Description : Thickness of plate is required more in welding than in riveting. a) True b) False
Description : Hot rolling produces a stronger shaft then cold rolling. a) True b) False
Description : Process of welding with respect to riveting takes a. More time b. Less time c. Same time d. None
Last Answer : b. Less time
Description : For two springs connected in parallel, net force is equal to the sum of force in each spring. a) True b) False
Last Answer : a) True
Description : For two springs connected in series, the net deflection is equal to the sum of deflection in two springs. a) True b) False
Description : For two spring connected in series, the force acting on each spring is same and equal to half of the external force. a) True b) False
Description : Cotter joint is connected to parallel roads . A. True B. False
Last Answer : B. False
Description : A spring of stiffness constant k is cut in two equal parts. The stiffness constant of new spring will be k/2. a) True b) False
Description : Stressed parts are always kept in tension. a) True b) False
Description : Hard peening is a) Hammering the weld across the length while the joint is hot b) Hammering the weld along the length while the joint is hot c) Hammering the weld along the length while the joint is cold d) Hammering the weld across the length while the joint is cold
Last Answer : b) Hammering the weld along the length while the joint is hot
Description : For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False
Last Answer : (a) True
Description : A cylinder roller creates lesser noise than a deep groove ball bearing. (a) True (b) False
Last Answer : (b) False
Description : If fluid film pressure is high and surface rigidity is low than mode of lubrication is called as elastohydrodynamic lubrication. a) True b) False
Description : For majority of bearings, actual life is considerably greater than rated life. a) True b) False
Description : Cylinder roller creates lesser noise than deep groove ball bearing. a) True b) False
Description : Compressed length is smaller than the solid length. a) True b) False
Description : Strength of parallel fillet weld is greater than strength of transverse fillet weld. a) True b) False
Description : The static load carrying capacity of fine threads is greater than that of coarse threads. a) True b) False
Description : Saddle key is more suitable than sunk key for heavy duty applications. a) True b) False
Description : Solid shaft is costlier than hollow shaft of same weight. a) True b) False
Description : The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False
Description : The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False
Description : In manual assembly, cost of screw is higher than the cost of driving a screw. a) True b) False
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 : 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 : Stribeck equation gives the dynamic load capacity of the bearing. (a) True (b) False
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
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 : Cylindrical roller bearing has a lower load capacity as compared to deep groove ball bearing. (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
Description : Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. [IES-1994] ... A (c) A is true but R is false (d) A is false but R is true
Last Answer : (a) Both A and R are individually true and R is the correct explanation of A
Description : Assertion (A): Oil as a cutting fluid result in a lower coefficient of friction. Reason (R): Oil forms a thin liquid film between the tool face and chip, and it provides 'hydrodynamic lubrication'. [IES- 2000] (a ... explanation of A (c) A is true but R is false (d) A is false but R is true
Last Answer : (c) A is true but R is false
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 : Assertion (A): In equilibrium position, the journal inside a journal bearing remains floating on the oil film. [IES-1995] Reason (R): In a journal bearing, the load on the bearing is perpendicular to the axis of the ... explanation of A (c) A is true but R is false (d) A is false but R is true
Description : Assertion (A): In steady rotating condition the journal inside a hydrodynamic journal bearing remains floating on the oil film. [IES-2008] Reason (R): The hydrodynamic pressure developed in steady rotating conditions in journal ... A (c) A is true but R is false (d) A is false but R is true
Last Answer : (a) Both A and R are true and R is the correct explanation of A