Bachelor's Theses
Bachelor's Theses
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In our eReader you can find the full English version of the book. Read Bachelor's Theses Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Bachelor's Theses
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To quickly assess the difficulty of the text, read a short excerpt:
E. M. F., 28 48 63 73 80.7 86.1 90 • In the atove the values of Effective E. M. P. mean the volts lost in resistance drop, hence on the short circuit "but- ton there is still ten volts drop, due to the .1 ohm resist- ance of armature, leads, and "brushes.
Por field regulators the resistance is usually made equal to that of the dynamo field for which it is intended.
Sometimes there is less resistance than in the fields, and in some rare cases as much as 25^ in excess. If the armature current wer...e constant at all speeds, the design would "be simple, "but unfortunately this is not so. The current taken at different speeds depends almost wholly upon the load that the motor is carrying. If the load is proportional to the speed, then the current will remain practically ccnstont.
Such a case is ol^served with motor pumps. Pan motors, on the other hand, do not give a load proportional to the speed, for the resistance of the air does not vary directly with veloc- ity, consequently, for low speeds the current in the armature is less than at full speed.
What to read after Bachelor's Theses?
You can find similar books in the "Read Also" column, or choose other free books by University of Wisconsin--Madison. College of Engineering to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
E. M. F., 28 48 63 73 80.7 86.1 90 • In the atove the values of Effective E. M. P. mean the volts lost in resistance drop, hence on the short circuit "but- ton there is still ten volts drop, due to the .1 ohm resist- ance of armature, leads, and "brushes.
Por field regulators the resistance is usually made equal to that of the dynamo field for which it is intended.
Sometimes there is less resistance than in the fields, and in some rare cases as much as 25^ in excess. If the armature current wer...e constant at all speeds, the design would "be simple, "but unfortunately this is not so. The current taken at different speeds depends almost wholly upon the load that the motor is carrying. If the load is proportional to the speed, then the current will remain practically ccnstont.
Such a case is ol^served with motor pumps. Pan motors, on the other hand, do not give a load proportional to the speed, for the resistance of the air does not vary directly with veloc- ity, consequently, for low speeds the current in the armature is less than at full speed.
What to read after Bachelor's Theses?
You can find similar books in the "Read Also" column, or choose other free books by University of Wisconsin--Madison. College of Engineering to read onlineMoreLess
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