A Treatise On the Theory of Alternating Currents 1
A Treatise On the Theory of Alternating Currents 1
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In our eReader you can find the full English version of the book. Read A Treatise On the Theory of Alternating Currents 1 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 A Treatise On the Theory of Alternating Currents 1
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To quickly assess the difficulty of the text, read a short excerpt:
The ampere coil of the other is put in No.^ main and the volt coil is connected across 3 and 2. Suppose that w^ is the reading on one meter and that W2 is the reading on the other, and suppose that w-^^ is greater than w^. Then the power given to the circuit is Wi ± W2* If the 238 ALTERNATING CURRENT THEORY [CH.
phase difference between Os and Vs.a is less than 90 degrees, w^ is positive, but if greater, w^ is negative. We must be careful, when measuring, to note whether we have to reverse the ...shunt con- nections or not in order that the needle may deflect the right way.
If we have to reverse, then w^ is negative.
The second method is to use three wattmeters, their ampere coils being put in the main circuits and their volt coils across and 1, and 2 and and 3 respectively.
It will be seen that the three wattmeter method is applicable to thre,e phase systems which use a fourth wire. In this case the two wattmeter method cannot be used.
These methods also apply when the load is arranged in any manner between the mains.
What to read after A Treatise On the Theory of Alternating Currents 1?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Russell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The ampere coil of the other is put in No.^ main and the volt coil is connected across 3 and 2. Suppose that w^ is the reading on one meter and that W2 is the reading on the other, and suppose that w-^^ is greater than w^. Then the power given to the circuit is Wi ± W2* If the 238 ALTERNATING CURRENT THEORY [CH.
phase difference between Os and Vs.a is less than 90 degrees, w^ is positive, but if greater, w^ is negative. We must be careful, when measuring, to note whether we have to reverse the ...shunt con- nections or not in order that the needle may deflect the right way.
If we have to reverse, then w^ is negative.
The second method is to use three wattmeters, their ampere coils being put in the main circuits and their volt coils across and 1, and 2 and and 3 respectively.
It will be seen that the three wattmeter method is applicable to thre,e phase systems which use a fourth wire. In this case the two wattmeter method cannot be used.
These methods also apply when the load is arranged in any manner between the mains.
What to read after A Treatise On the Theory of Alternating Currents 1?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Russell to read onlineMoreLess
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