Primary Batteries
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In our eReader you can find the full English version of the book. Read Primary Batteries 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 Primary Batteries
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No action takes place on open circuit, but since polarization sets in rapidly on closed circuit, the cell can be used only for applications requiring an intermittent current. For such purposes it has a very long life. Some of these cells, after remaining in service for several years, operate absolutely as well as the first day they were set up.
BATTERY TESTS. 115 CHAPTER IX.
BATTERY TESTS.
77. What a Systematic Test Includes. — The most ob- vious quantities to be measured are the E.M.F. and int...ernal resistance. While a high E.M.F. is desirable for most purposes, a low E.M.F. is no indication that a battery may not be admirably adapted to its intended work. So low internal resistance is a commendable feature, because, caeteris paribus, low internal resistance means high efficiency ; but if a battery is to be used on a circuit of high resistance, its own resistance is rela- tively of less account. For large currents, low internal resistance is a necessity.
It is further very desirable to know the rate, progress, and total amount of polarization that takes place when a cell is kept on a closed circuit of known resistance for a definite period.
What to read after Primary Batteries?
You can find similar books in the "Read Also" column, or choose other free books by Henry S Henry Smith Carhart to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
No action takes place on open circuit, but since polarization sets in rapidly on closed circuit, the cell can be used only for applications requiring an intermittent current. For such purposes it has a very long life. Some of these cells, after remaining in service for several years, operate absolutely as well as the first day they were set up.
BATTERY TESTS. 115 CHAPTER IX.
BATTERY TESTS.
77. What a Systematic Test Includes. — The most ob- vious quantities to be measured are the E.M.F. and int...ernal resistance. While a high E.M.F. is desirable for most purposes, a low E.M.F. is no indication that a battery may not be admirably adapted to its intended work. So low internal resistance is a commendable feature, because, caeteris paribus, low internal resistance means high efficiency ; but if a battery is to be used on a circuit of high resistance, its own resistance is rela- tively of less account. For large currents, low internal resistance is a necessity.
It is further very desirable to know the rate, progress, and total amount of polarization that takes place when a cell is kept on a closed circuit of known resistance for a definite period.
What to read after Primary Batteries?
You can find similar books in the "Read Also" column, or choose other free books by Henry S Henry Smith Carhart to read onlineMoreLess
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