Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou
Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou
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In our eReader you can find the full English version of the book. Read Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou 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 Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou
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To quickly assess the difficulty of the text, read a short excerpt:
The contact resistance of copper brushes being only one-tenth that of carbon, is so small that it can be neglected.
The driving motor should be of such a size that when driving its alternator at its normal speed and with the maximum field current at which core loss is desired, that it will be loaded only to about half load. This is so that no particular shifting of the brushes on the motor will then be necessary, for it is to keep the core loss of the driving motor constant throughout, so that ...when sub- tracting- the motor input (which includes its own core loss) with field off the alternator, ' from its input with field on the alternator, the core loss of the driving motor being the same in each case will disappear in the calcu- lation.
MAKING THE TEST.
To this end, the field on the driving motor is kept perfectly constant throughout the core loss test by the ammeter in its circuit, and since the motor is so chosen 142 ALTERNATING-CURRENT GENERATORS.
in size that it is but half loaded, the armature reaction has no influence upon the actual field flux of the motor.
What to read after Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou?
You can find similar books in the "Read Also" column, or choose other free books by Edward Brackett Raymond to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The contact resistance of copper brushes being only one-tenth that of carbon, is so small that it can be neglected.
The driving motor should be of such a size that when driving its alternator at its normal speed and with the maximum field current at which core loss is desired, that it will be loaded only to about half load. This is so that no particular shifting of the brushes on the motor will then be necessary, for it is to keep the core loss of the driving motor constant throughout, so that ...when sub- tracting- the motor input (which includes its own core loss) with field off the alternator, ' from its input with field on the alternator, the core loss of the driving motor being the same in each case will disappear in the calcu- lation.
MAKING THE TEST.
To this end, the field on the driving motor is kept perfectly constant throughout the core loss test by the ammeter in its circuit, and since the motor is so chosen 142 ALTERNATING-CURRENT GENERATORS.
in size that it is but half loaded, the armature reaction has no influence upon the actual field flux of the motor.
What to read after Motor Troubles the Tracing of Direct Current And Alternating Current Motor Trou?
You can find similar books in the "Read Also" column, or choose other free books by Edward Brackett Raymond to read onlineMoreLess
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