Electrical Catechism; An Introductory Treatise On Electricity And Its Uses
Electrical Catechism; An Introductory Treatise On Electricity And Its Uses
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In our eReader you can find the full English version of the book. Read Electrical Catechism; An Introductory Treatise On Electricity And Its Uses 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 Electrical Catechism; An Introductory Treatise On Electricity And Its Uses
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To quickly assess the difficulty of the text, read a short excerpt:
926. How is an ammeter calibrated by reference to a standard ammeter?
The two instruments are connected in series, and the same current is sent through both. The current is measured on the standard in- strument and the deflection of the pointer of the other is noted. The strength of the current is then changed and readings are taken on both instruments again. In this way, as many points as are desired are established and a scale is made. For such work it ^is desirable to use a storage battery s...o that the current may remain constant dur- Standard Ammeter Test Ammeter V Lamps FIG. 926. CALIBRATING AN AMMETER.
ing each set of readings. The 'two instruments should be placed far enough apart so that the magnetic field from one does not affect the other (see Nos. 752 to 755), and each should be carefully leveled. It is well to compare the two instruments with increasing currents and then with decreasing currents to check against errors and to see how far the instrument is affected by friction or by hysteresis (see No.
What to read after Electrical Catechism; An Introductory Treatise On Electricity And Its Uses?
You can find similar books in the "Read Also" column, or choose other free books by George Defrees Shepardson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
926. How is an ammeter calibrated by reference to a standard ammeter?
The two instruments are connected in series, and the same current is sent through both. The current is measured on the standard in- strument and the deflection of the pointer of the other is noted. The strength of the current is then changed and readings are taken on both instruments again. In this way, as many points as are desired are established and a scale is made. For such work it ^is desirable to use a storage battery s...o that the current may remain constant dur- Standard Ammeter Test Ammeter V Lamps FIG. 926. CALIBRATING AN AMMETER.
ing each set of readings. The 'two instruments should be placed far enough apart so that the magnetic field from one does not affect the other (see Nos. 752 to 755), and each should be carefully leveled. It is well to compare the two instruments with increasing currents and then with decreasing currents to check against errors and to see how far the instrument is affected by friction or by hysteresis (see No.
What to read after Electrical Catechism; An Introductory Treatise On Electricity And Its Uses?
You can find similar books in the "Read Also" column, or choose other free books by George Defrees Shepardson to read onlineMoreLess
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