The Electrical EngineerBiggs & Company, 1893 - Electrical engineering |
From inside the book
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Page 10
... cost of installation , he observed that it had been elicited that the cost of effectually equipping one mile of track on the overhead system amounted to about £ 4,000 a mile , and that of the conduit system to about £ 6,000 a mile ...
... cost of installation , he observed that it had been elicited that the cost of effectually equipping one mile of track on the overhead system amounted to about £ 4,000 a mile , and that of the conduit system to about £ 6,000 a mile ...
Page 11
... cost of instal- lation . Mr. SCOTT RUSSELL said that the Brush Company would undertake the responsibility for the equipment of a line , and they had calculated that to extinguish the extra capital outlay involved in the fitting up of an ...
... cost of instal- lation . Mr. SCOTT RUSSELL said that the Brush Company would undertake the responsibility for the equipment of a line , and they had calculated that to extinguish the extra capital outlay involved in the fitting up of an ...
Page 31
... cost of maintenance rather than initial cost . It would take too long to discuss this fully , but one phase of it may be examined , and for this particular examination I am indebted to a friend . His contention , with which I fully ...
... cost of maintenance rather than initial cost . It would take too long to discuss this fully , but one phase of it may be examined , and for this particular examination I am indebted to a friend . His contention , with which I fully ...
Page 34
... Cost of excavating and making good varies from 3s . 6d . to 20s . To whatever this comes to must be added : Cost of casing , iron or bitumen . Cost of laying casing - say , 24d . to 3d . per yard for iron . Cost of cable ( 10 per cent ...
... Cost of excavating and making good varies from 3s . 6d . to 20s . To whatever this comes to must be added : Cost of casing , iron or bitumen . Cost of laying casing - say , 24d . to 3d . per yard for iron . Cost of cable ( 10 per cent ...
Page 46
... cost of wiring - which , according to the estimate of Messrs . Holmes and Co. , Newcastle , would be £ 625 , and allowing 5 per cent . for interest , and 5 per cent . for depreciation - the cost of production would be £ 264 or thereby ...
... cost of wiring - which , according to the estimate of Messrs . Holmes and Co. , Newcastle , would be £ 625 , and allowing 5 per cent . for interest , and 5 per cent . for depreciation - the cost of production would be £ 264 or thereby ...
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Common terms and phrases
adopted alternating current amount amperes annum apparatus arc lamps armature arranged batteries Board of Trade boilers Brush Electrical brushes cable capital carbon carried cent central station Chairman Chancery-lane charge circuit conductors connected considerable construction copper Corporation cost Councillor curve Directors distance dividend dynamos effect efficiency electric light Electric Light Company Electric Supply electrical engineer electrolytic energy experiments Fleet Street give Glasgow heat Improvements incandescent lamps increase induction installation instrument insulated iron load London Lord Kelvin machine magnetic mains matter means measure mechanical meeting ment Messrs metal meter miles motors municipal National Telephone Company obtained ordinary patents plant plate position present pressure Prof proposed provisional order railway resistance series coils shares shunt Siemens square steam street Telegraph tion Town Council traction tramway transformer tricity tube unit voltage voltmeter volts wattmeter watts wire
Popular passages
Page 255 - Engineer, being the art of directing the great sources of power in Nature for the use and convenience of man...
Page 228 - 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 304 - Ampere, which is one-tenth of the unit of current of the 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 304 - 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 305 - Then insert the cork and zinc rod, passing the glass tube through the hole prepared for it. Push the cork gently down until its lower surface is nearly in contact with the liquid. The air will thus be nearly all expelled, and the cell should be left in this condition for at least twenty-four hours before sealing, which should be done as follows.
Page 304 - This is supported horizontally in the liquid near the top of the solution by a platinum wire passed through holes in the plate at opposite corners. To prevent the disintegrated silver which is formed on the anode from falling on to the kathode, the anode should be wrapped round with pure filter paper, secured at the back with sealing wax.
Page 228 - As a unit of work, the joule, which is equal to 107 units of work in the CGS system, and which is represented sufficiently well for practical use by the energy expended in one second by an international ampere in an international ohm.
Page 305 - ... carefully removing any loose pieces of the zinc. Just before making up the cell dip the zinc into dilute sulphuric acid, wash with distilled water, and dry with a clean cloth or filter paper.
Page 305 - ... solution, adding sufficient crystals of zinc sulphate from the stock bottle to ensure saturation, and a small quantity of pure mercury. Shake these up well together to form a paste of the consistence of cream. Heat the paste, but not above a temperature of 30° C.
Page 253 - ... in a similar form in his own works ; and this by no less a mathematician than LEONARD EULER, whose system of light, as far as it is worthy of notice, either was, or might have been, wholly borrowed from NEWTON, HOOKE, HUYGENS, and MALEBRANCHE.