| 单词 | field coil |
| 例句 | Contract compromises F4E is also encountering trouble on another key contract, for the giant poloidal field coils that will wrap around the girth of the machine. Nuclear Fusion Project Struggles to Put the Pieces Together 2012-10-28T20:15:51.247Z In a further method devised by Mr. Tesla, one or more auxiliary brushes are employed, by means of which a portion or the whole of the field coils is shunted. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Describe the variable field coil method of field regulation. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z With the armature still off, connect the field coil directly to the dry cell. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z "With all that power going into it," Davenport said, "I don't want anyone to get hurt by spatters of molten metal when those field coils blow." The Foreign Hand Tie Generators using reversed series regulation will give an excessive output if there is a short-circuit in the series field coils. The Automobile Storage Battery Its Care And Repair Referring to the drawing, A is the field-magnet, B the armature, C the field coils, and D the armature-coils of the motor. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The method of varying the current through the field coils by means of a rheostat inserted in series with the field winding as shown in fig. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z This pressure is due to the residual magnetism in the field cores, as the field coils are not yet connected. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine Generators, condensers—even the overdrive field coils in their armored mounts outside the hull—everything blew. Talents, Incorporated These series field coils are magnetically opposed to the shunt field coils, and an increase in charging current results in a weakening of the field flux. The Automobile Storage Battery Its Care And Repair Thus each motor-circuit while in derivation to the other includes one armature and one field coil. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z A rheostat is placed in series with the field coils, and by varying the resistance, more or less current will flow through the coils, thus regulating the field strength. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Its field coils consist of a few turns of very heavy wire, enough to carry all the current of the external circuit, without heating. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine A. If failure was due to a short circuit, damage might be done to the armature or field coils by overheating. The Traveling Engineers' Association To Improve The Locomotive Engine Service of American Railroads The only way of doing this is to short-circuit the series field coils, or connect a resistance across them. The Automobile Storage Battery Its Care And Repair In certain respects this plan of including both armature and field coils in circuit is a marked improvement. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Electric set of former wound field coils for four pole dynamo. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Connections of a series dynamo The Shunt Dynamo The shunt dynamo, on the other hand, has field coils connected directly across the circuit, from one wire to another, instead of in "series." Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine This may be removed readily, affording access to any field coil, which in this way may be easily removed and replaced. The New York Subway Its Construction and Equipment Test armature windings and field coils for grounds. The Automobile Storage Battery Its Care And Repair The armature coils in this case, as in the previous figure, are wound for different self-induction to correspond with the field coils. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The pole pieces are cylindrical in shape and are fitted with shoes which retain the field coils in place and assist commutation. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Its voltage remains stationary; and, since the resistance of its field coils never changes, the magnets do not vary in strength. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine Before putting the reverse block on the motor, remove all the connections between the lower binding posts and the brush holders and connect both ends of the field coil to the lower posts. The Boy Mechanic: Volume 1 700 Things for Boys to Do The commutator short-circuits the armature coils in succession in the proper positions to utilize the repulsive effect set up by the currents which are induced in them by the alternations in the field coils. Scientific American Supplement, No. 601, July 9, 1887 The circuit connections between the armature and field coils are made, as indicated in the previous figures, through brushes and rings, which are not shown. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The field coils are former wound, the insulation being reinforced with mica. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z The main switch should be so wired that when open it will throw all the current off the line, but still leave the field coils, the voltmeter, and the switchboard lamp in circuit. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine We have calculated armatures and field coils for the new dynamo with Upton, and held the stakes for Jehl and his fellows at their winding bees. Edison, His Life and Inventions CC' are the field coils or inducing coils, which alone are put into the alternating current circuit. Scientific American Supplement, No. 601, July 9, 1887 When the desired speed is reached, the shunt around the armature-coils is opened and the current directed through both armature and field coils. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The field coils are former wound and the series windings permit of any degree of compounding up to 10% by the use of suitable German silver shunts connected across the series field. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z A motor having its armature circuit connected to the generator, and the field coils closed upon themselves. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Wayne compound wound rectangular ventilated spool field coil. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z The field coils surround the armature, and there is a laminated iron field structure completing the magnetic circuit. Scientific American Supplement, No. 601, July 9, 1887 |
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