Telephone Construction, Installation, Wiring, Operation and MaintenanceN.W. Henley Publishing Company, 1914 - 223 стор. |
З цієї книги
Результати 6-10 із 41
Сторінка 10
... electrical resistance according to the mechanical pressure brought to bear upon it . Under high pressure the resistance of carbon is low , but under a low pressure its resistance is comparatively high . If , therefore , at the ...
... electrical resistance according to the mechanical pressure brought to bear upon it . Under high pressure the resistance of carbon is low , but under a low pressure its resistance is comparatively high . If , therefore , at the ...
Сторінка 11
... h , and binding post v , which is in electrical contact with h . Sound waves entering the mouthpiece 7 strike the diaphragm and cause it to vibrate . The vi- 1 brations thus produced are transmitted to the carbon block II.
... h , and binding post v , which is in electrical contact with h . Sound waves entering the mouthpiece 7 strike the diaphragm and cause it to vibrate . The vi- 1 brations thus produced are transmitted to the carbon block II.
Сторінка 14
... of this transmitter at A and B , respectively . The outer case s is of metal , shaped much in the form of an electric bell gong . To this is attached a metal cover rr containing the mouthpiece . The granulated car- bon can be 14.
... of this transmitter at A and B , respectively . The outer case s is of metal , shaped much in the form of an electric bell gong . To this is attached a metal cover rr containing the mouthpiece . The granulated car- bon can be 14.
Сторінка 17
... to ampere in the secondary or line circuit . The electric energy in both circuits , however , remains the same , namely , E I. As the resistance losses on the line are pro- portional to the square of the current transmitted , it 2 17.
... to ampere in the secondary or line circuit . The electric energy in both circuits , however , remains the same , namely , E I. As the resistance losses on the line are pro- portional to the square of the current transmitted , it 2 17.
Сторінка 25
... electrical conductivity . The de- polarizer is saturated with electrolyte and is tightly packed in the zinc can around the carbon rod . As these dry cells are widely used on rural circuits , it is well to notify the subscribers of the ...
... electrical conductivity . The de- polarizer is saturated with electrolyte and is tightly packed in the zinc can around the carbon rod . As these dry cells are widely used on rural circuits , it is well to notify the subscribers of the ...
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Telephone Construction: Installation, Wiring, Operation and Maintenance ... William Hiram Radcliffe Попередній перегляд недоступний - 2015 |
Telephone Construction: Installation, Wiring, Operation and Maintenance ... William Hiram Radcliffe Попередній перегляд недоступний - 2017 |
Загальні терміни та фрази
alternating current ampere armature automatic binding posts bolt brace called cents clamp complete metallic circuit Concrete conductors conduit connected construction containing copper copper wire cord cross-arms desk set diaphragm distributing board Dry cells electrical electromotive force exchange switchboard extension bell fastened feet fully illustrated gage gas engines gear ground heat coil HISCOX hole hook switch inches induction coil installation insulated iron wire jack lamp Leclanché cell lightning arrester line circuit line drop line wires machine magnet magneto bell mechanical method mounted O'CONOR SLOANE ohms operator operator's pair party party-line systems pipe placed plate plug pole position practical primary winding Protective Apparatus receiver resistance ringing key rope rubber screw sheath shown in Fig shows shunt side signal sleeve soldered spring steam steel storage battery switch arm tele Telephone Circuit telephone set terminals Testing tion transmitter usually wall set zinc
Популярні уривки
Сторінка 6 - A NEW SKETCHING PAPER. A new specially ruled paper to enable you to make sketches or drawings in isometric perspective without any figuring or fussing. It is being used for shop details as well as for assembly drawings, as it makes one sketch do the work of three, and no workman can help seeing just what is wanted. Pads of 40 sheets, 6x9 inches, 25 cents.
Сторінка 9 - WIRING A HOUSE. By HERBERT PRATT. Shows a house already built; tells just how to start about wiring it; where to begin; what wire to use; how to run it according to Insurance Rules; in fact, just the information you need. Directions apply equally to a shop. Fourth edition . . 25 cents FACTORY MANAGEMENT.
Сторінка 13 - LOCOMOTIVE BREAKDOWNS AND THEIR REMEDIES. By GEO. L. FOWLER. Revised by WM. W. WOOD, Air-Brake Instructor. Just issued. Revised pocket edition. It is out of the question to try and tell you about every subject that is covered in this pocket edition of Locomotive Breakdowns. Just imagine all the common troubles that an engineer may expect to happen some time, and then add all of the unexpected ones, troubles that could occur, but that you...
Сторінка 11 - The laying out of cams is a serious problem unless you know how to go at it right. This puts you on the right road for practically any kind of cam you are likely to run up against.
Сторінка 4 - It has been the aim of the authors, in preparing this book, to produce one which shall be of use and benefit to those who are associated with, or interested in, the modern developments of the industry. Contents: Chap.
Сторінка 12 - Triple Valve for Freight Service; and the Cross-Compound Pump. The operation of all parts of the apparatus is explained in detail, and a practical way of finding their peculiarities and defects, with a proper remedy, is given. It contains 2,000 questions with their answers, which will enable any railroad man to pass any examination on the subject of Air Brakes. Endorsed and used by air-brake instructors and examiners on nearly every railroad in the United States.
Сторінка 7 - COMMUTATOR CONSTRUCTION. By WM. BAXTER, JR. The business end of any dynamo or motor of the direct current type is the commutator. This book goes into the designing, building, and maintenance of commutators, shows how to locate troubles and how to remedy them; everyone who fusses with dynamos needs this.
Сторінка 15 - This is a collection of 1,890 engravings of different mechanical motions and appliances, accompanied by appropriate text, making it a book of great value to the inventor, the draftsman, and to all readers with mechanical tastes. The book is divided into eighteen sections or chapters, in which the subject-matter is classified under the following heads: Mechanical Powers; Transmission of Power; Measurement of Power; Steam Power; Air Power Appliances; Electric Power and Construction; Navigation and...
Сторінка 20 - THREADS AND THREAD CUTTING. By COLVIN and STABEL. This clears up many of the mysteries of thread-cutting, such as double and triple threads. internal threads. catching threads. use of hobs. etc. Contains a lot of useful hints and several tables.