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Unit iv power transmissions systems pulleys

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UNITIVPOWER TRANSMISSIONS SYSTEMS, PULLEYS: Transmission of power by belt and rope drives,transmission efficiencies, beltsflat and v typesropes - pulleys for belt and rope drives, materials,chain drivesDESIGN OF POWER SCREWS:Design of screw, square ACME, buttress screws, design of nut,compound screw, differential screw, ball screw- possible failures.SPUR & HELICAL GEAR DRIVES:Spur gears- helical gearsload concentration factordynamicload factor, surface compressive strengthbending strengthdesign analysis of spur gearsestimationof centre distance, module and face width, check for plastic deformation, check for dynamic and wearconsiderations.UNITVMACHINE TOOL ELEMENTS:Levers and brackets: design of levershand levers-foot levercranked leverlever of a lever loaded safety valve- rocker arm straightangular- design of a crank pin
B. Tech (MECHANICAL ENGINEERING) - R20UNIVERSITY COLLEGE OF ENGINEERING VIZIANAGARAMJAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY: KAKINADAbrackets- hangers- wall boxes.Wire Ropes: Construction, Designation, Stresses in wire ropes, rope sheaves and drums.Note: Design data book is permitted for examinationText Books:1.Machine Design/V.Bandari/TMH Publishers2.Machine Design/ NC Pandya & CS Shaw/ Charotar publishers3.Design data book.References:1.Machine Design: An integrated Approach / R.L. Norton / Pearson Education2.Mech. Engg. Design / JE Shigley/Tata McGraw Hill education3.Design of machine elements- spots/Pearson Publications4.Machine Design-Norton/Pearson PublicationsCourse Outcomes:Upon successful completion of this course the student should be able to:1.Select the suitable bearings based on the application of the loads and predict the life of the bearing(BL-3)2.Interpret engine parts such as connecting rod, crank, crank shaft and engine parts such as piston,cylinder and cylinder liners (BL-2)3.Analyze curved beams with various cross sections and crane hooks (BL-4)4.Analyze power transmission elements such as belts, chains, ropes.power screws and gear drives(BL-4)5.Interpretmachine tool elements such as levers and brackets (BL-2)CO-PO Mapping:S.NOPO1PO2PO3PO4PO5PO6PO7PO8PO9PO10PO11PO12CO1CO2CO3CO4CO5
B. Tech (MECHANICAL ENGINEERING) - R20UNIVERSITY COLLEGE OF ENGINEERING VIZIANAGARAMJAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY: KAKINADAIII Year-II SemesterLTPC3003DYNAMICS OF MACHINERY (R203203PC03)Course Objectives:The Students will acquire the knowledge1.To analyze stabilization of sea vehicles, aircrafts and automobile vehicles2.To solve frictional losses, torque transmission of mechanical systems.3.To analyze dynamic forces of slider crank mechanism and design of flywheel4.To understand the methods of balancing reciprocating and rotary masses.

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Electrical Engineering, JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, UNIVERSITY COLLEGE OF ENGINEERING VIZIANAGARAM

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