The Electric Railway in Theory And Practice
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In our eReader you can find the full English version of the book. Read The Electric Railway in Theory And Practice Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Electric Railway in Theory And Practice
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With regard to the possible average effi- ciency of street car motors, it is quite within bounds to say that with a properly designed single motor 80 per cent, is quite attainable ; and even this efficiency may be somewhat raised, though it is hardly likely to reach 90 per cent. , on account of the present necessity for regulating devices of some kind or other and the need for a comparatively light *The Electrical World, May 31, 1890.
THE EFFICIENCY OF ELECTRIC TRACTION. 221 weight machine. In ...most street car systems, even to-day, the armature speed is somewhere nearly i. Ooo revolutions per minute, at usual car speeds; and consequently there must be a reduction, by gearing, to one-tenth or one-twelfth the armature speed, between the armature and the car axle. This has been until recently generally accomplished by a double set of spur gears. The efficiency of such gearing is usually given in books on engineering at over 90 per cent. For each set of gears, and with reasonable precautions against Cirt this figure may be reached readily enough.
What to read after The Electric Railway in Theory And Practice?
You can find similar books in the "Read Also" column, or choose other free books by Oscar Terry Crosby to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
With regard to the possible average effi- ciency of street car motors, it is quite within bounds to say that with a properly designed single motor 80 per cent, is quite attainable ; and even this efficiency may be somewhat raised, though it is hardly likely to reach 90 per cent. , on account of the present necessity for regulating devices of some kind or other and the need for a comparatively light *The Electrical World, May 31, 1890.
THE EFFICIENCY OF ELECTRIC TRACTION. 221 weight machine. In ...most street car systems, even to-day, the armature speed is somewhere nearly i. Ooo revolutions per minute, at usual car speeds; and consequently there must be a reduction, by gearing, to one-tenth or one-twelfth the armature speed, between the armature and the car axle. This has been until recently generally accomplished by a double set of spur gears. The efficiency of such gearing is usually given in books on engineering at over 90 per cent. For each set of gears, and with reasonable precautions against Cirt this figure may be reached readily enough.
What to read after The Electric Railway in Theory And Practice?
You can find similar books in the "Read Also" column, or choose other free books by Oscar Terry Crosby to read onlineMoreLess
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