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Electrical Technology, Vol2: Machines and Measurements, 1/e by S. P. Bali

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31

Electromechanical Energy Conversion

OBJECTIVES

In this chapter you will learn about:

  • Fundamental laws: Faraday’s law, Fleming’s right-hand and left-hand rule and Lenz’s law
  • Development of torque and motor action
  • Induced e.m.f. and generator action
  • Relation between motor action and generator action
  • Magnetic structure of d.c. machines
  • Elementary generator and generated voltage
  • E.m.f. equation
  • Interaction of magnetic fields of current-carrying conductors
  • Magnitude of mechanical force
  • Generator and motor power flow
  • Conversion process in a machine
  • Linear and rotary motion
  • Methods of analysis
  • Energy balance—action and reaction
  • Singly excited and doubly excited machines

Electric machines

31.1  INTRODUCTION

Electrical energy does have an overriding ...

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