... vertical.The speed of the plane is:A. the same as the speed of soundB. half the speed of soundC. three-fifths the speed of soundD. 0.866 times the speed of soundE. twice the speed of soundans: ... certain vector in the xy plane has an x componentof 4 m and a y componentof 10 m. It isthen rotated in the xy plane so its x component is doubled. Its new y component is about:A. 20 mB. 7.2mC. ... be headed?A. 27◦EofNB. 30◦EofNC. 45◦EofND. 60◦EofNE. depends on the width of the riverans: B47. Two projectiles are in flight at the same time. The acceleration of one relative to...
... list ofdesign disciplines e.g. ship design, building design, process design, bridge design, clothing or fashion design and so on. Here we are concerned with machine design. We now define a machine ... end of this lesson, the students should have the knowledge of ã Basic concept ofdesign in general. ã Concept ofmachinedesign and their types. ã Factors to be considered in machine design. ... Discuss ‘factor of safety ‘ in view of the reliability in machine design. A.4: Reliability of a designed machine is concerned with the proper functioning of the elements and the machine as a...
... that the state of stress at a point can be given by six stress components only. It is important to understand the implication of this state of stress at a point in the designof machine elements ... and its limitations. ã Designof members subjected to combined bending, torsion and axial loading. ã Buckling of beams. 2.1.1 Introduction Stresses are developed in machine elements due ... cast iron machine parts of cross-sections shown in figure-2.1.7.2 are subjected to bending moments. Which of the two sections can carry a higher moment and determine the magnitude of the applied...
... coupling Design details of such couplings will be discussed in the next lesson. The main features of the design are essentially (a) Designof bolts (b) Designof hub (c) Overall design and ... students should have the knowledge of ã The function of couplings in machinery. ã Different types of couplings: rigid and flexible couplings. ã Types of rigid couplings such as sleeve, clamp, ... angularmisalignment 5.1.2.1.1.F- Types of misalignments in shafts 5.1.2.1.1 Sleeve coupling One of the simple type of rigid coupling is a sleeve coupling which consists of a cylindrical sleeve keyed...
... Modification of Soderberg diagram ã Estimation of material properties for helical spring ã Types of helical springs ã Design considerations for buckling and surge. 7.2.1 Designof helical ... Spotts, DesignofMachine Elements, Prentice Hall India Pvt. Limited, 6th Edition, 1991. Version 2 ME , IIT Kharagpur Spring Nomenclature: Let us select the type of spring ... Inner diameter of spring, . iD32mm= 3900 30040N/mm 40 10 N/m15===ìSpring rate, k Once the value of stiffness is known, then the value of number of active turns, N of the spring...
... , Mechanical Engineering Design , McGraw Hill Publication, 5th Edition. 1989. 2. M.F Spotts, DesignofMachine Elements, Prentice Hall India Pvt. Limited, 6th Edition, 1991. 3. Khurmi, ... and Gupta J.K., Text book on Machine Design, Eurasia Publishing House, New Delhi. 4. Sharma, C.S. and Purohit Kamalesh, DesignofMachine Elements, Prentice Hall of India, New Delhi, 2003. ... the limiting values of the angle of twist of a shaft? Version 2 ME , IIT Kharagpur G = shear modulus of elasticity Ip = Polar moment of inertia The limiting value of θ varies from 0.3...
... the design procedure of a pressure vessel. We consider a mild steel vessel of 1m diameter comprising a 2.5 m long cylindrical section with hemispherical ends to sustain an internal pressure of ... thickness. Stresses in a spherical shell are also discussed. Basic design principle of thin cylinders are considered. Designof both welded and riveted joints for the shells are discussed. Version ... Considering the equilibrium of a cut out section the circumferential stress σθ and longitudinal stress σz can be found. Consider a section of thin cylinder of radius r, wall thickness t...