A Short Course in the Testing of Electrical Machinery; For Nonelectrical Students
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A Short Course in the Testing of Electrical Machinery; For Nonelectrical Students

A Short Course in the Testing of Electrical Machinery; For Nonelectrical Students


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About the Book

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ... of closing switches and why is this sequence absolutely necessary? Is the parallel operation of compound generators entirely satisfactory? LIST OF A. C. EXPERIMENTS 1. Wave Shape, Power And Power Factor, Effective Values. 2. Properties Of The A.C. Circuit. 3. The Alternator; Its Characteristics On Non-inductive And Inductive Load; Prediction Of External Characteristic. 4. The Transformer; Operation And Characteristic Curves; Meas Urement Of Losses And Prediction Of Efficiency. 5. The Induction Motor; Its Operating Characteristics With And Without Added Rotor Resistances. 6. The Synchronous Motor; Synchronizing And Phase Character Istics. 7. The Rotary Converter; Effect Of Speed And Voltage Upon Ratio; Operating Characteristics. 8. Parallel Operation Of Alternators; Distribution Of Load; Cir Culating Current, Etc. 9. Three Phase Circuits; Current And Voltage Relations; Meas Urement Of Power. TESTING OF ELECTRICAL MACHINERY EXPERIMENT I Wave Shape, Effective Values, Power and Power Factor. An alternating current is one which periodically changes its direction of flow. The frequency (number of cycles or periods per second) depends upon the class of service for which the alternating current power is to be used. In alternating current railway motors a frequency of 15 or 25 is employed; for illumination, arc and incandescent lamps, a frequency of 60 is standard; telephone currents are made up of many superimposed frequencies, ranging from perhaps 100 to 1500; for wireless telegraphy and telephony the frequency may be between 20,000 and several hundred thousand; two small metallic spheres charged with electricity of opposite kinds will, if brought close enough together, exchange and neutralize charges; the discharge current is oscillatory in...


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Product Details
  • ISBN-13: 9781234229764
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 42
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 1234229765
  • Publisher Date: 12 Oct 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 95 gr


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