Theory of Wave Transmission a Treatise On Transmission of Power By Vibrations
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In our eReader you can find the full English version of the book. Read Theory of Wave Transmission a Treatise On Transmission of Power By Vibrations 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 Theory of Wave Transmission a Treatise On Transmission of Power By Vibrations
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To quickly assess the difficulty of the text, read a short excerpt:
At starting a^ = a = a, and we have Mq = 0. It follows that the motor is not self-starting, and will require an impulse to set it rotating. Put ttj = rt — rtj = sa then a^ = a{i — s) -}- a -^ 2a and if s is small, we have flA2i The torque is practically a maximum when S = Cas and we see that for this value the second term in the bracket becomes 2 s- 1+4:^ 2 which is negligible.
The maximum torque is, therefore, about ^ _ asA^ _ A2 ■""• ~ 2S ~ 2C which is similar to the value found for three-pha...se motors, having the factor 2 instead of 3 as multiplier of the torque due to a single phase in the rotor.
Collector Motors. — The motors described above develop a comixiratively small starting torque, which can only be increased by devices involving a loss of energy. Such motors are not adapted to cases in which a variable speed is required without loss of power. In order, therefore, to obtain high starting torques -it is necessary to employ a different construction.
"5 ii6 WAVE TRAXSMISSIOX OF POWER The characteristic feature of this type of motor is that the currents produced by tlic pistons of the rotor are collected and suitably distributed by a fixed member, which we shall call a collector, or distributer.
What to read after Theory of Wave Transmission a Treatise On Transmission of Power By Vibrations?
You can find similar books in the "Read Also" column, or choose other free books by George Constantinesco to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
At starting a^ = a = a, and we have Mq = 0. It follows that the motor is not self-starting, and will require an impulse to set it rotating. Put ttj = rt — rtj = sa then a^ = a{i — s) -}- a -^ 2a and if s is small, we have flA2i The torque is practically a maximum when S = Cas and we see that for this value the second term in the bracket becomes 2 s- 1+4:^ 2 which is negligible.
The maximum torque is, therefore, about ^ _ asA^ _ A2 ■""• ~ 2S ~ 2C which is similar to the value found for three-pha...se motors, having the factor 2 instead of 3 as multiplier of the torque due to a single phase in the rotor.
Collector Motors. — The motors described above develop a comixiratively small starting torque, which can only be increased by devices involving a loss of energy. Such motors are not adapted to cases in which a variable speed is required without loss of power. In order, therefore, to obtain high starting torques -it is necessary to employ a different construction.
"5 ii6 WAVE TRAXSMISSIOX OF POWER The characteristic feature of this type of motor is that the currents produced by tlic pistons of the rotor are collected and suitably distributed by a fixed member, which we shall call a collector, or distributer.
What to read after Theory of Wave Transmission a Treatise On Transmission of Power By Vibrations?
You can find similar books in the "Read Also" column, or choose other free books by George Constantinesco to read onlineMoreLess
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