Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S
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In our eReader you can find the full English version of the book. Read Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S 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 Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S
In our eReader you can find the full English version of the book. Read Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S 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 Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S
What reading level is Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S book?
To quickly assess the difficulty of the text, read a short excerpt:
— Two wires in metallic contact really form a loop, the resistance of which can be measured by the bridge iu the ordinary way. The distance of the contact from the testing office will be haK of the total resistance divided by the resistance per mile of the wires.
51 Testing Earths.
It is important that the connections with the earth at terminal offices should be perfect, and that the earth should offer as small a resistance as possible.
The following, known as Pomeroy's method, is usually adopt...ed for testing the resistance of an " earth." Join up the Bridge, according to Fig. 41. Line 1 is a wire (any line- wire will do) which is put to earth at the distant station, and E is the " earth," whose resistance is to be measured. Make the ratios A and equal. Call R the resistance unplugged in the Rheostat to obtain equi- librium. Now reverse the Battery and connect the Bridge, as shown in Eig. 42 — the zinc pole of the Battery f/c. -f/.
being joined to a second line wire running at about right angles to Line 1.
What to read after Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S?
You can find similar books in the "Read Also" column, or choose other free books by Bell, James, A. I. E. E to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
— Two wires in metallic contact really form a loop, the resistance of which can be measured by the bridge iu the ordinary way. The distance of the contact from the testing office will be haK of the total resistance divided by the resistance per mile of the wires.
51 Testing Earths.
It is important that the connections with the earth at terminal offices should be perfect, and that the earth should offer as small a resistance as possible.
The following, known as Pomeroy's method, is usually adopt...ed for testing the resistance of an " earth." Join up the Bridge, according to Fig. 41. Line 1 is a wire (any line- wire will do) which is put to earth at the distant station, and E is the " earth," whose resistance is to be measured. Make the ratios A and equal. Call R the resistance unplugged in the Rheostat to obtain equi- librium. Now reverse the Battery and connect the Bridge, as shown in Eig. 42 — the zinc pole of the Battery f/c. -f/.
being joined to a second line wire running at about right angles to Line 1.
What to read after Telegraphists' Guide to the New Examinations in Technical Telegraphy. Together With An Appendix Dealing With Dry And Secondary Cells, Univeral Battery System, Direct Reading Battery Instrument, Duplex (Bridge Method), New System of Morning Testing, Fast S?
You can find similar books in the "Read Also" column, or choose other free books by Bell, James, A. I. E. E to read onlineMoreLess
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