Original Papers On Dynamo Machinery And Allied Subjects
Original Papers On Dynamo Machinery And Allied Subjects
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The two machines, being at rest, were coupled in series with a pilot incandescent lamp across the terminals; the two bands were then simulta- neously thrown on : for some seconds the machines almost pulled up the engine. As the speed began to increase, the lamp lit up intermittently, but in a few seconds more the machines dropped into step together, and the pilot lamp lit up to full brightness and became perfectly steady and remained so. An arc lamp was then introduced, and a per- fectly steady... current of over 200 amperes drawn off with- out disturbing the harmony. The arc lamp being removed, a Siemens electro-dynamometer was introduced between the machines, and it was found that the current passing was only 18 amperes, whereas, if the machines had been in phase to send the current in the same direction, it would have been more than ten times as great. On throwing off the two bands simultaneously, the machines continued to run by their^ own momentum, with retarded velocity. It was observed that the current, instead of diminishing from diminished electromotive force, steadily increased to about 50 amperes, owing to the diminished electrical control be- Digiti ized by Google 176 DYNAMO MACHIITERY AI^D ALLIED SUBJECTS.
What to read after Original Papers On Dynamo Machinery And Allied Subjects?
You can find similar books in the "Read Also" column, or choose other free books by Hopkinson, John, 1849-1898 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The two machines, being at rest, were coupled in series with a pilot incandescent lamp across the terminals; the two bands were then simulta- neously thrown on : for some seconds the machines almost pulled up the engine. As the speed began to increase, the lamp lit up intermittently, but in a few seconds more the machines dropped into step together, and the pilot lamp lit up to full brightness and became perfectly steady and remained so. An arc lamp was then introduced, and a per- fectly steady... current of over 200 amperes drawn off with- out disturbing the harmony. The arc lamp being removed, a Siemens electro-dynamometer was introduced between the machines, and it was found that the current passing was only 18 amperes, whereas, if the machines had been in phase to send the current in the same direction, it would have been more than ten times as great. On throwing off the two bands simultaneously, the machines continued to run by their^ own momentum, with retarded velocity. It was observed that the current, instead of diminishing from diminished electromotive force, steadily increased to about 50 amperes, owing to the diminished electrical control be- Digiti ized by Google 176 DYNAMO MACHIITERY AI^D ALLIED SUBJECTS.
What to read after Original Papers On Dynamo Machinery And Allied Subjects?
You can find similar books in the "Read Also" column, or choose other free books by Hopkinson, John, 1849-1898 to read onlineMoreLess
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