Electrical Engineering Measuring Instruments for Commercial And Laboratory Purpo
Electrical Engineering Measuring Instruments for Commercial And Laboratory Purpo
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In our eReader you can find the full English version of the book. Read Electrical Engineering Measuring Instruments for Commercial And Laboratory Purpo 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 Engineering Measuring Instruments for Commercial And Laboratory Purpo
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To quickly assess the difficulty of the text, read a short excerpt:
201.
These are carefully " aged " and magnetized so as to be strong and permanent.
The pen, or inker, attached to the spindle and coil, rests against the paper with a small component of its own weight, sufficient to give a clear mark- ing without introducing a fric- tional error.
The clock - work, which drives the drum once round either every twelve or twenty- four hours, has a non- mag- netic lever movement, and is free from back-lash a com- mon fault with clocks of this nature. It is attached... to the base of the instrument by a hinge, enabling it to be drawn outside the case when chang- ing the chart on its surface. When pushed back against a stop it is in its working posi- tion. The scale is an extremely open one at the working part, and is marked in one -volt divisions.
Recording" Ammeters and Voltmeters Fig. 200. Kelvin Permanent- Magnet Moving-Coil Recording Voltmeter The instruments of this class, made by Messrs. Everett, Edgcumbe, & Co. , of London, for use with direct currents, are constructed on the well-known moving-coil D'Arsonval principle, which it is unnecessary to explain.
What to read after Electrical Engineering Measuring Instruments for Commercial And Laboratory Purpo?
You can find similar books in the "Read Also" column, or choose other free books by George Dudley Aspinall Parr to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
201.
These are carefully " aged " and magnetized so as to be strong and permanent.
The pen, or inker, attached to the spindle and coil, rests against the paper with a small component of its own weight, sufficient to give a clear mark- ing without introducing a fric- tional error.
The clock - work, which drives the drum once round either every twelve or twenty- four hours, has a non- mag- netic lever movement, and is free from back-lash a com- mon fault with clocks of this nature. It is attached... to the base of the instrument by a hinge, enabling it to be drawn outside the case when chang- ing the chart on its surface. When pushed back against a stop it is in its working posi- tion. The scale is an extremely open one at the working part, and is marked in one -volt divisions.
Recording" Ammeters and Voltmeters Fig. 200. Kelvin Permanent- Magnet Moving-Coil Recording Voltmeter The instruments of this class, made by Messrs. Everett, Edgcumbe, & Co. , of London, for use with direct currents, are constructed on the well-known moving-coil D'Arsonval principle, which it is unnecessary to explain.
What to read after Electrical Engineering Measuring Instruments for Commercial And Laboratory Purpo?
You can find similar books in the "Read Also" column, or choose other free books by George Dudley Aspinall Parr to read onlineMoreLess
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