Transcription of Unit 4: Mechanical Principles - FREE STUDY
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Unit 4: Mechanical Principles - FREE STUDY
unit 4: Mechanical Principles unit code: F/601/1450 QCF level: 5 Credit value: 15 OUTCOME 3 POWER TRANSMISSION TUTORIAL 1 BELT DRIVES 3 Power Transmission Belt drives: flat and v-section belts; limiting coefficient friction; limiting slack and tight side tensions; initial tension requirements; maximum power transmitted Friction clutches: flat single and multi-plate clutches; conical clutches; coefficient of friction; spring force requirements; maximum power transmitted by constant wear and constant pressure theories; validity of theories Gear trains: simple, compound and epicycle gear trains; velocity ratios; torque, speed and power relationships; efficiency; fixing torques On completion of this tutorial you should be able to Solve problems involving speed change with pulleys. Solve power transmission problems involving the speed and torque transmission of pulley systems.
D.J.Dunn www.freestudy.co.uk 3 1. INTRODUCTION Pulley drive systems depend on friction to enable the belt to grip the wheel and pull it around with it.
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Unit 4: Mechanical Principles - FREE STUDY, Unit 4, Mechanical Principles Unit, BASIC PRINCIPLES AND CALCULATIONS IN CHEMICAL, Section B, Computer Engineering, SECTION B) COMPUTER ENGINEERING, STUDY, BOMBS, FUZES, AND ASSOCIATED, Mechanical, Engineering Thermodynamics” Mechanical Engineering Handbook, PROPOSED UNIFORM SYLLABUS FOR U.P, Materials Science and Metallurgical Engineering