Description : Which type of joints is better when the product is subjected to large vibrations: welded or threaded? a) Welded b) Threaded c) Both have same results d) Depends on the magnitude of the vibrational force
Last Answer : a) Welded
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 : Keyed joints never lead to stress concentration on shafts. a) True b) False
Last Answer : b) False
Description : Cotter joints is used for transforming rotating torque. A. True B. False
Last Answer : B. False
Description : Teflon can be used for manufacturing of knuckle joints. A. True B. False
Last Answer : A. True
Description : The shear plane in case of bolts should (a) be across threaded portion of shank (b) be parallel to axis of bolt (c) be normal to threaded portion of shank (d) never be across the threaded portion (e) none of the above.
Last Answer : (d) never be across the threaded portion
Description : If a fastener is threaded into a tapped hole, then the fastener is likely to be called as a) Screw b) Bolt c) Washer d) Screw or bolt
Last Answer : a) Screw
Description : Maximum efficiency of a square threaded is given by a) 1-sinǾ/1+sinǾ b) 1+sinǾ/1-sinǾ c) 1-2sinǾ/1+2sinǾ d) 1+2sinǾ/1-2sinǾ
Last Answer : a) 1-sinǾ/1+sinǾ
Description : Which type of screw fasteners are threaded through out its length? a. Cap screws b. Set screws c. Studs d. Tap bolt
Last Answer : b. Set screws
Description : The maximum efficiency of a square threaded screw is (A) (1 - sinφ)/ (1 + sinφ) (B) (1 + sinφ)/ (1 - sinφ)s (C) (1 - sinφ)/ (1 + cosφ) (D) (1 + cosφ)/ (1 - sinφ)
Last Answer : (A) (1 - sinφ)/ (1 + sinφ)
Description : Within the external combination engine, a piston rod is usually connected to the cross head by means of....... A. Cotter joints B. Universal joints C. Knuckle joint D. Bearing
Last Answer : A. Cotter joints
Description : Cotter joints is used for transforming........... A. Axial compressive load B. Axial tensile load C. Axial tensile or compressive load D. Twisting load
Last Answer : C. Axial tensile or compressive load
Description : Cotter joints is connected two ......... roads. A. Co - axial B. Parallel C. Perpendicular D. Inclined
Last Answer : A. Co - axial
Description : The joints between link of a suspension bridge, which of the following joints used.. A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Last Answer : B. Knuckle joint
Description : Forked - pin joints is also called as... A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Description : In steam engine, the piston rod is usually connected to the cross head by means of a....... A. Cotter joints B. Universal joints C. Knuckle joint D. Bearing
Description : Lap welded joints are a. Rectangular b. Square c. Triangular d. None
Last Answer : c. Triangular
Description : Inspection of welded joints with respect to riveted joints is a. Difficult b. Easier c. Cannot say d. None
Last Answer : a. Difficult
Description : Welded joints require a. Punching of holes b. Drilling of holes c. Punching & Drilling of holes d. None
Last Answer : d. None
Description : Welded joints are a. Hinged joint b. Rigid joint c. Freely supported joint
Last Answer : b. Rigid joint
Description : Lap welded joints used in circumferential joints because of ? i. High strength requirements ii. Low strength requirements iii. Low as well as high strength requirements
Last Answer : ii. Low strength requirements
Description : Why are butt welded joints longitudinal joints ? i. High strength requirements ii. Low strength requirements iii. Low as well as high strength requirements iv. None
Last Answer : i. High strength requirements
Description : While calculating bending stress in the following welded joints which of the welds moment of inertia can be neglected? a) 1 b) None of the listed c) Both 1 & 3 d) Both 2 & 4
Last Answer : b) None of the listed
Description : he transverse fillet welded joints are designed for (a) tensile strength (b) compressive strength (c) bending strength (d) shear strength
Last Answer : (a) tensile strength
Description : Answer the following S. No Statement Chose the correct answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the ... of RPM meter is used and for a visible shaft-end _______ type of RPM meter is used.
Last Answer : Sr No Statement Chose the correct answer OR Fill-in-the-blanks Solution 1 Fyrite measures CO2, O2 and SO2 True/False False 2 Ultrasonic Flow Meter uses the principle of____& ____ ... ] 10 In a gasification system the reduction zone is above the combustion zone True/False 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
Last Answer : a) True
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
Last Answer : (b) False
Description : For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False
Last Answer : (a) True
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 : A cylinder roller creates lesser noise than a deep groove ball bearing. (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
Description : Transverse fillet weld can be designed using the same equations as of parallel fillet weld. a) True b) False