Minutes of Proceedings of the Institution of Civil Engineers, Volume 133The Institution, 1898 - Civil engineering Vols. 39-204 (1874/75-1916/17) have a section 3 containing "Abstracts of papers in foreign transactions and periodicals" (title varies); issued separately, 1919-37, as the institution's Engineering abstracts from the current periodical literature of engineering and applied science, published outside the United Kingdom. |
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3-phase alternating currents altitude amperes angle armature Author axis Ballsbridge Blaenavon boiler C.E. VOL carried cent centimetres centre circuit coils conductors construction continuous-current copper curve cylinders depth diagram diameter difference distance dredging driving-wheels Dundalk effect efficiency electric electromotive force engine estuary experiments feet fire-box give given harbour increased induction motor iron kilowatts length load locomotives machine magnetic field magnetic flux maximum method metres miles millimetres moon's navigable channel obtained Paper Parshall phase pipes plates pole practice pressure pumps rails Railway resistance revolutions per minute right ascension river rods rotary rotary converter running sand scour secondary shaft shown in Fig side silt slide-valves speed square inch station stays steam steel supply surface survey synchronous tidal tide tons torque training-walls transformers tubes tunnel valve velocity vertical volts weight wheels winding wire
Popular passages
Page 175 - ... are complied with as regards his pipe. 7. When the return is partly or entirely uninsulated a continuous record shall be kept by the Company of the difference of potential during the working of the tramway between the points of the uninsulated return furthest from and nearest to the generating station. If. at any time such difference of potential exceeds the limit of seven volts, the Company shall take immediate steps to reduce it below that limit. 8. Every electrical connection with any pipe...
Page 474 - The tests of electrical cooking apparatus detailed in this paper were made with the hope of obtaining a method of cooking that would be satisfactory, with a minimum risk of fire, in a college which is supplied with electricity for lighting and power at a pressure of 110 volts. Experiments were carried out with the following apparatus : — 1 oven, 13...
Page 508 - H=9'24 is higher than he rememhers having seen. Very noteworthy is the apparent magnetic instability of the iron under certain conditions. It is well shown by the following experiment. The magnetic force was changed from its maximum value through zero to the value of the coercive force, and the secondary circuit closed at known intervals of time after such change. The results •re given in the table below.
Page 489 - Another tube, of the same electrolytic copper, became similarly " pitted " when used for conveying sea-water. When these were replaced by tubes of ordinary copper, there was no further trouble. During the past six years some very remarkable instances of the failure of alloys have come to my notice, particularly with regard to wires of german-silver and platinoid used in the construction of resistance-coils. Specimens of these wires, insulated with white silk, were submitted...
Page 103 - ... tide-covered area may, in some cases, be made without reducing the effective backwater. 4. The lower the level of backwater the greater will be its effect in scouring the low-water channel, and, therefore, the nearer the site of abstraction is to high-water mark the less injurious will be the effect. 5. By enlarging the tidal capacity of a river at a low level, where the acquired volume is filled every tide, compensation may be given for a much larger amount of water excluded at a higher level.
Page 137 - ... of /i/2. We can now show that the angle of pointer swing from the equilibrium position is approximately proportional to the value of /i/j.
Page 176 - ... for regulating the employment of insulated returns or of uninsulated metallic returns of low resistance, for preventing fusion or injurious electrolytic action of or on gas or water pipes, or other metallic pipes, structures, or substances, and for minimising, as far as is reasonably practicable, injurious interference with the electric wires, lines, and apparatus of...
Page 413 - He was a member of the Institution of Mechanical Engineers, of the North-East Coast Institute of Engineers and Shipbuilders, and of the Iron and Steel Institute, which he joined in 1886.
Page 489 - ... under the microscope, is seen to contain crevices and fissures ; the section has patches of various colours, corresponding, most probably, to separate masses of " liquated " metal. It is further suggested that by the process of " liquation " homogeneity of structure is lost, consequently the tensile strength of the material varies from point to point of its mass, so also does the electrical conductivity. In passing afterwards through the die of the wire-maker, the weaker constituents give way...
Page 136 - Inductive motors with brushes, having two reciprocal inductive electric and magnetic axes. (4) Inductive motors without brushes, having short-circuited coils and two reciprocal inductive electric and magnetic axes : this is the modern induction-motor.