Download or read book Canadian Electrical News and Steam Engineering Journal Vol 6 written by Chas. H. Mortimer and published by Forgotten Books. This book was released on 2018-02-06 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 6: January, 1896 A horse-power in a steam engine or other prime mover is 550 foot lbs. Raised one foot per second, or lbs. One foot per minute. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Canadian Electrical News and Steam Engineering Journal Vol 3 written by Chas. H. Mortimer and published by Forgotten Books. This book was released on 2017-10-26 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 3: Old Series, Vol. XV; January 1893 In the accompanying curves are shown the cost of production, and the charge per unit at the compound and simple rate. The ordinates represent pence, and the abscissae the number of hours per annum the supply is used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Canadian Electrical News and Steam Engineering Journal 1891 Vol 1 Classic Reprint written by Chas. H. Mortimer and published by Forgotten Books. This book was released on 2017-06-04 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Steam Engineering Journal, 1891, Vol. 1 Now let us assume that an error of 50 pounds was made in weighing the water, so that the apparent amount of water evaporated was pounds, instead of pounds, the actual amount. So that the apparent evaporative performance of the boiler is pounds of water per pound of coal, instead of pounds, which is the correct result. The difference introduced by an error of fifty pounds in weighing the water, it will be seen, is only 02. Now let us make-a different supposition. Let us assume that the water was weighed correctly, but that an error of fifty pounds was made in weighing the coal, the apparent weight of coal being pounds. Then so that the ap parent evaporative performance of the boiler is pounds of water per pound of coal, instead of the true result, pounds. The difference in this case is quite appreciable, and the example shows that it makes quite a difference whether a given error is made in weighing the coal or in weighing the water. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Canadian Electrical News and Steam Engineering Journal Vol 9 written by and published by Forgotten Books. This book was released on 2017-10-27 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Steam Engineering Journal, Vol. 9: January, 1899 Rope transmission. - In a paper on power transmission by ropes and belts, read before the French Society of Civil Engineers, V. Dubreuil states that one great advantage possessed by ropes is that cyclical variations in the speed of the driving pulley are damped by the ropes, so that the speed of the driving pulley is much more uniform than that of the driver. Ropes are also useful when the two lines of shafting are not peifectly parallel. The velocity of the rope should not be less than about feet per minute, nor more than feet, while with belts a velocity of as little as 600 feet per minute may be used, but the maximum should not exceed feet per minute, above which the centri fugal force prevents the proper adhesion of the belt to the pulley. For great distances between the lines of shafting ropes should be used; though in exceptional cases they may be employed with as little as 12 feet between shaft centres, in general the distance should not be less than 20 feet. Spans of as much as 328 feet have been worked by ropes with only intermediate support. Under no circumstances should the diameter of the smallest pulley be less than 30 times the diameter of the rope, and in general the pulley ratio should not be greater than four to one. Three standard ropes of manila, hemp or cotton may be used. Hemp is much cheaper than cotton, and usually wears longer, but is less pliable. To facilitate estimates, the approximate weight ofa rope pulley may be taken as 5% pounds per groove for each inch of diameter, though single groove pulleys will weigh double this amount. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book CANADIAN ELECTRICAL NEWS AND STEAM ENGINEERING JOURNAL 1895 written by UNKNOWN. AUTHOR and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Joint Catalogue of the Periodicals Publications and Transactions of Societies and Other Books Published at Intervals to be Found in the Various Libraries of the City of Toronto written by and published by . This book was released on 1898 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Catalogue of Periodical Publications in the Library of the American Institute of Electrical Engineers written by American Institute of Electrical Engineers. Library and published by . This book was released on 1904 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Electrical News written by and published by . This book was released on 1892 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Periodical Sets written by Engineering Societies Library and published by . This book was released on 1913 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Electrical News and Engineering Journal 1901 Vol 11 Classic Reprint written by and published by Forgotten Books. This book was released on 2017-10-27 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Engineering Journal, 1901, Vol. 11 Design and Superintendence of - Electric Railroads, Steam and Hydraulic Plants, Long Distance Power Transmissions, Municipal Electric Lighting Systems, Welding and Electrolytic Processes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Journal of the Engineering Institute of Canada written by Engineering Institute of Canada and published by . This book was released on 1927 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Electrical News and Engineering Journal Vol 15 written by UNKNOWN. AUTHOR and published by Forgotten Books. This book was released on 2015-06-16 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Canadian Electrical News and Engineering Journal, Vol. 15: January, 1905 The controller is mounted on the engineer's platform and has seven steps; it acts by connecting different resistances, in series, with the rotating part of the motor. These resistances are entirely separate from the machine, being connected with it by means of three slip rings. The mine incline varies from forty-five degrees to twenty degrees as depth is obtained. At present it has a depth of over 2,000 feet, and is equipped with double tracks of four feet gauge laid with 56 pound steel rails. The skips are self dumping and are not run in balance. These skips discharge into bins, the bottoms of which are about five feet above the tunnel track, which allows the cars running on the latter to be loaded through hoppers. The nominal speed of the hoist is five hundred feet a minute, but it has been found in actual practice that it only takes from five to six minutes for the skip to come from the bottom of the mine, discharge its load, and return again to the bottom. The total load hoisted (rope, skip and ore), is from 7 1/2 to 8 tons. The crushing plant is situated by the side of the railroad track, about three-quarters of a mile from the mouth of the tunnel. This plant is supplied with power by a branch from the main line, and the machinery at present consists of a 20 inch by 6 inch Farrel crusher with a set of geared rolls used for reducing the hard ore to fines. This hard ore occurs in parts of the mine but not in all. The two machines (crusher and rolls), are driven by a 50-horse power, 200 volt, slow speed, type C, Westinghouse induction motor, supplied through two 25 k. w. transformers. Electrical measurements indicate that these machines take about 40 h.p. when crushing eight tons per hour. This plant is only a temporary one, to be used until the new mill, now under construction, is completed. The new mill will be driven throughout by 2,000 volt motors. It is designed to handle all the ore from the mine, and will both drass the rich ore for shipping and crush and concentrate those ores which are too lean to ship. The hoist is so designed that, in case of accident, it may be operated by steam power by simply coupling an engine to each end of the countershaft of the new hoist, an operation which will require very little time. Steam will be supplied to the engines by old boilers, located about fifty feet away, the stacks from which consist of two tile pipes laid up the old shaft to the surface above. The old compound steam, single stage air compressor, built by the Canadian Rand Drill Company, which is located just over the mouth of the adit tunnel, can be used in the case of low water, or, of accident to the electrically driven compressor. Steam is supplied to this old compressor by the two 125 h.p. boilers which formerly ran it. In a recent test of the new plant it was found that, when double the full load was on the generators (a 100 per cent, overload test) the level of the water in the stand pipe was below its normal point, and that the water in the tail race was above the normal point; these water levels, both above and below, fluctuated rapidly and it was difficult to gauge them accurately with the means which were on hand at the time of the test. The actual head of water on the turbines is supposed to have been thirty-three feet, and if this assumption is correct the water wheels would have used, theoretically, 706 horse power of water, of which amount about 18 h.p. was consumed in the exciting generator. Allowing the main generator to have used 688 h. p. and on the assumption that it developed one hundred ampere per phase at a voltage of 2,160, and on the further assumption that the efficiency of the generator at this overload was 92 per cent., and that the power factor of the circuit (water rheostat) was unity, the brake horse power developed would have been about 543 h.p., which would give a...
Download or read book Catalogue of Technical Periodicals Libraries in the City of New York and Vicinity written by Engineering Societies Library and published by . This book was released on 1915 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Journal written by and published by . This book was released on 1919 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 7, no.7, July 1924, contains papers prepared by Canadian engineers for the first World power conference, July, 1924.
Download or read book Bulletin of the American Institute of Mining Engineers written by and published by . This book was released on 1914 with total page 1664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bi monthly Bulletin of the American Institute of Mining Engineers written by and published by . This book was released on 1914 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Report written by Great Britain. Fuel Research Board and published by . This book was released on 1923 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
