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accumulator action advantage alternating current ampere ampere turns ampere-hours apparatus arc lamps armature arrangement battery belt boiler brushes carbon cast iron cause cell cent central stations centrifugal centrifugal force charge circuit coal coils commutator condenser conductors connected considerable consists construction copper core cylinder diameter direct coupling direct current direct-current discharge dynamo effect efficiency Elec electric lighting electric-lighting plant Electrical Engineer employed example fact feet field-magnet flux fly-wheel force gas-engine governor heat horse-power incandescent lamps increase inductors insulation isolated plants latter Lightning-Arrester load machine machinery magnetic magnetic circuit mechanical mercurous sulphate motor objectionable obtained ordinary piston plates pole-pieces practically pressure produced pulley reduced resistance revolutions per minute shaft short-circuited shown in Fig speed square inch steam steam-engine stroke sufficient sulphate supply surface switch temperature tion tubes turbine usually valve voltage volts weight wheel winding wire zinc zinc sulphate
Page 22 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 447 - HASKINS, CH The Galvanometer and its Uses. A Manual for Electricians and Students. Fourth Edition, revised. 12mo, morocco.
Page 22 - CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 446 - DYNAMIC ELECTRICITY: Its Modern Use and Measurement, chiefly in its application to Electric Lighting and Telegraphy, including: 1. Some Points in Electric Lighting, by Dr. John Hopkinson. 2. On the Treatment of Electricity for Commercial Purposes, by JN Shoolbred. 3. Electric-Light Arithmetic, by RE Day, ME Fourth Edition. Illustrated. 16mo., boards, 166 pp. (No. 71 Van Nostrand's Science Series.) 50 cents EDGCUMBE, K.
Page 448 - CE) A Pocket-book of Electrical Rules and Tables for the use of Electricians and Engineers.
Page 23 - As a unit of quantity, the international coulomb, which is the quantity of electricity transferred by a current of one international ampere in one second. As a unit of capacity, the international farad, which is the capacity of a condenser charged to a potential of one international volt by one international coulomb of electricity.
Page 23 - ... As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere, and which is represented sufficiently well for practical use by \\\% of the electromotive force between the poles or electrodes of the voltaic cell known as Clark's cell, at a temperature of 15° C., and prepared in the manner described in the accompanying specification...