Elementary Dynamo Design With Numerical Examples
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In our eReader you can find the full English version of the book. Read Elementary Dynamo Design With Numerical Examples 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 Elementary Dynamo Design With Numerical Examples
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Generated in the coil by varia- tions in the magnetic flux due to the current in the coil itself. For a fuller explanation of reactance voltage, see Chapter VII.
The reactance voltage as calculated by the formulae given below should, if possible, be under two volts if the dynamo is to run at all loads with a fixed brush position. In the larger machines it is impossible to obtain so low a value except by using very abnormal dimensions for the armature core and, provided care is taken that the ot...her constants of the machine are suitable, it is quite possible to obtain satisfactory designs in which the value of the reactance voltage is considerably greater than two volts. The safest course, however, is always to keep the reactance voltage as low as practicable.
The formula for calculating the reactance voltage was first published in Parshall and Hobart's book on Dynamo Design ; they calculate the E. M. F. Due to the self-in- duction of the short-circuited turn on the assumption 80 ELEMENTARY DYNAMO DESIGN that, in a slotted armature of ordinary type, a current of one ampere flowing through one turn will give rise to twenty magnetic lines for every inch length of core.
What to read after Elementary Dynamo Design With Numerical Examples?
You can find similar books in the "Read Also" column, or choose other free books by W Benison Hird to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Generated in the coil by varia- tions in the magnetic flux due to the current in the coil itself. For a fuller explanation of reactance voltage, see Chapter VII.
The reactance voltage as calculated by the formulae given below should, if possible, be under two volts if the dynamo is to run at all loads with a fixed brush position. In the larger machines it is impossible to obtain so low a value except by using very abnormal dimensions for the armature core and, provided care is taken that the ot...her constants of the machine are suitable, it is quite possible to obtain satisfactory designs in which the value of the reactance voltage is considerably greater than two volts. The safest course, however, is always to keep the reactance voltage as low as practicable.
The formula for calculating the reactance voltage was first published in Parshall and Hobart's book on Dynamo Design ; they calculate the E. M. F. Due to the self-in- duction of the short-circuited turn on the assumption 80 ELEMENTARY DYNAMO DESIGN that, in a slotted armature of ordinary type, a current of one ampere flowing through one turn will give rise to twenty magnetic lines for every inch length of core.
What to read after Elementary Dynamo Design With Numerical Examples?
You can find similar books in the "Read Also" column, or choose other free books by W Benison Hird to read onlineMoreLess
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