A guide for the electric testing of telegraph cablesE. & F.N. Spon, 1879 - 72 páginas |
Términos y frases comunes
ance Assoc BANISTER FLETCHER battery cable cloth condenser conductor connected to earth copper copper-pole copper-resistance Crown 8vo d² log diameter dielectric discharged earth-current ELECTRIC RESISTANCE ELECTRIC TESTING electro-motive force electrometer Engineers EXAMPLE fault Fcap FORMULÆ galvano gives a deflection Hooper's core inductive capacity Inst insulation per knot insulation test joint key BK knot at 75 leading wires length Logarithms loss of charge Manufacture measured megohms meter microfarad Mirror galvanometer Morse apparatus multiplying power N. P. BURGH nautical miles Number of cells numerous illustrations obtained Ohm's Law Ohms ordinary gutta-percha core P. L. SIMMONDS plates plug Pocket-Book Practical Treatise put to earth R₁ ratio of balance resistance R₂ resistance-coil screw Second edition ship shore shunt Sh shunted galvanometer speed Spons spot of light Steam sulation Tables THOMAS BOX tion U₂ V₂ weight per knot Wheatstone bridge Willoughby Smith's gutta-percha words per minute zinc-pole
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