Design of Electrical Machinery; A Manual for the Use, Primarily, of Students in Electrical Engineering Courses Volume 1

Design of Electrical Machinery; A Manual for the Use, Primarily, of Students in Electrical Engineering Courses Volume 1

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...14 Auxiliary poles 50 Average length of armature turn 19 B Bearings 38 Bipolar dynamos 2 Breadth, of pole-piece 11," of brush-contact 32 Brushes, dimensioning of 32," number of 31 ', tension of 34 Brush-holders, examples of 59, 67, 73, 79, 82, 86 103 C PAGE Calculation of armature 5,10, 25 ""efficiencies 52, 53 "field coils 40, 46 ""magnetizing forces 44 Carbon brushes 31 Cast iron, permeability of 45 ' steel, permeability of 45 Classification of armature windings 14 ""field magnet frames 2 Coils, armature 14, 18, 19 Commercial efficiency 53 Commutation 29 Commutator, thickness of insulation for 32 1', heating of 35 ' segments, difference of potential between 37 ,"" number of 32 Comparison of bipolar and multipolar dynamos 2 ""lap and wave windings 14 Compound winding, calculation of 48 Contact area of brushes 33 Cooling surface, see Radiating surface. Core, see Armature core. Cross-magnetization 49 Currents, eddy, see Eddy currents. D Demagnetizing armature turns 47 Depth of armature core 20 "field windings 42, 46 Diameter of armature core 6, 7, 8 shaft 37 ""commutator 28 Dimensions of armature bearings 38 "" " core 5 Dissipation of energy in armature 25 "" "field coils 41, 46 Dynamo, bipolar 2," electro-plating 12, 31," multipolar 2, 56 PAGE Dynamos, illustrative designs 57 20 KW., 130 volt, 800 r.p.m 85 30" 125 " 600" 66 40" 220 " 600" 57 50" 250 " 550" 70 60" 550 " 800" 62 75" 250" 500" 77 100" 230 " 500" 81 300" 125" 90" 89 E Eddy currents 22, 24 Efficiencies 52 Emission of heat from armature 25 End-insulation, ...show more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236595068
  • 9781236595065