Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 285
-tor. Tramway Poles. See Line Poles. Tramway Rail.—The running rail em-ployed on the permanent way of a tramwaysystem. There are very many different sec-tions used for tramway rails in various locali-ties, but an attempt to standardise tramway rails has been made by the British StandardsCommittee,… … standard Tramway Kail (Section No. 3) The fig. shows the form and dimensions ofSection No. 3. See Demerbe Eail; Vig-noles Eail. (Eef. Eeport of British Stan-dards Committee.) Tramways, Guard Wire for. SeeGuard Wire. Transformation Ratio, the ratio be-tween the primary and secondary voltagesof a…
Electrical engineering
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