Practical Alternating Currents And Alternating Current Testing
Practical Alternating Currents And Alternating Current Testing
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In our eReader you can find the full English version of the book. Read Practical Alternating Currents And Alternating Current Testing 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 Practical Alternating Currents And Alternating Current Testing
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Several methods of determining the approxi- mate value of the armature reactance have been given ; it is therefore usually possible to determine the amount of reactance voltage or idle voltage (= %irnLC).
Describe a semi-circle on E rt and from E Y describe an arc with radius equal to 2 TT n L C, the reactance voltage, to cut the semi-circle in P. Then P is the energy com- ponent of the resultant electromotive force in the circuit, and is in phase with the current.
The power give^n to the circu...it by either machine = current x voltage of machine x cos 0, where $ is the angle enclosed between the line OP and the voltage of the machine. For the lagging machine, the value of cos will be negative, hence the power given by this machine to the circuit is negative. In other words, this machine absorbs power and is driven by the other. * The difference between the positive and negative power is seen at once by observing whether the projection of the current vector on the voltage vector would have its direc- tion in the same or the opposite direction as the voltage.
What to read after Practical Alternating Currents And Alternating Current Testing?
You can find similar books in the "Read Also" column, or choose other free books by Charles Frederick Smith to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Several methods of determining the approxi- mate value of the armature reactance have been given ; it is therefore usually possible to determine the amount of reactance voltage or idle voltage (= %irnLC).
Describe a semi-circle on E rt and from E Y describe an arc with radius equal to 2 TT n L C, the reactance voltage, to cut the semi-circle in P. Then P is the energy com- ponent of the resultant electromotive force in the circuit, and is in phase with the current.
The power give^n to the circu...it by either machine = current x voltage of machine x cos 0, where $ is the angle enclosed between the line OP and the voltage of the machine. For the lagging machine, the value of cos will be negative, hence the power given by this machine to the circuit is negative. In other words, this machine absorbs power and is driven by the other. * The difference between the positive and negative power is seen at once by observing whether the projection of the current vector on the voltage vector would have its direc- tion in the same or the opposite direction as the voltage.
What to read after Practical Alternating Currents And Alternating Current Testing?
You can find similar books in the "Read Also" column, or choose other free books by Charles Frederick Smith to read onlineMoreLess
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