Polyphase Currents
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In our eReader you can find the full English version of the book. Read Polyphase Currents 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 Polyphase Currents
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M. F. Of rotation, represented by the length E 2 E r, will depend upon the amount of the flux entering the rotor, and the rate of cutting, or speed of the motor ; and since the former quantity is represented to a certain scale by the length O E 2, we may write length E 2 E r oc O E 2 x speed, or, speed a Q^- 2 With regard to the power given out by the motor, this is the product of torque and speed, or power oc torque x speed = (O E 2 x O I 2 ) x ^^ r = O I 2 x E 2 E n which is a measure of the ...power, expressed in watts per phase.
This is graphically represented by the shaded rect- angle (Fig. 82), and, since the conditions which occur in phase A are repeated in phase B, twice the watts obtained by the above construction will be the total power developed by the rotor.
It is important to know what is the amount of overload that an induction motor will stand apart from consider- ations of heating or efficiency before it will cease to respond to a further increase of load; and this point, together with the reasons for inserting resistances in rotor windings for starting purposes, will be dealt with in the following article.
What to read after Polyphase Currents?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Still to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
M. F. Of rotation, represented by the length E 2 E r, will depend upon the amount of the flux entering the rotor, and the rate of cutting, or speed of the motor ; and since the former quantity is represented to a certain scale by the length O E 2, we may write length E 2 E r oc O E 2 x speed, or, speed a Q^- 2 With regard to the power given out by the motor, this is the product of torque and speed, or power oc torque x speed = (O E 2 x O I 2 ) x ^^ r = O I 2 x E 2 E n which is a measure of the ...power, expressed in watts per phase.
This is graphically represented by the shaded rect- angle (Fig. 82), and, since the conditions which occur in phase A are repeated in phase B, twice the watts obtained by the above construction will be the total power developed by the rotor.
It is important to know what is the amount of overload that an induction motor will stand apart from consider- ations of heating or efficiency before it will cease to respond to a further increase of load; and this point, together with the reasons for inserting resistances in rotor windings for starting purposes, will be dealt with in the following article.
What to read after Polyphase Currents?
You can find similar books in the "Read Also" column, or choose other free books by Alfred Still to read onlineMoreLess
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