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Published **1915**
by Govt. print. off. in Washington .

Written in

- Electric measurements.

**Edition Notes**

Other titles | Inductance of low resistances. |

Contributions | Weibel, Ernest, joint author., Silsbee, Francis B., joint author., United States. National Bureau of Standards |

Classifications | |
---|---|

LC Classifications | QC534 .W4 |

The Physical Object | |

Pagination | 1 p.l., p. |

ID Numbers | |

Open Library | OL6582472M |

LC Control Number | 15026358 |

OCLC/WorldCa | 29098941 |

METHODS FOR THE MEASUREMENT O1~ THE EFFECTIVE INDUCTANCE OF RESISTANCE COILS. x By F. W. Grover and H. L. Curtis. I1~ the measurement of inductances which are associated with relatively high resistances, such as resistance coils, the multipliers of voltmeters and wattmeters and the like, the ordinary methods using alternating current of Author: F.W. Grover, H.L. Curtis. 2A GUIDE TO LOW RESISTANCE TESTING A GUIDE TO LOW RESISTANCE TESTING 3 INTRODUCTION The quantitative study of electrical circuits originated in , when Georg Simon Ohm published his famous book “Die galvanische Kette, mathematisch bearbeitet” in which he gave his complete theory of electricity. In this seminal work,File Size: KB. byamethodofsubstitution,usingastandardofexactlythesame resistanceasthe unknown, but of suchaform astoallow its inductance to be calculated from its dimensions, and in so far asFile Size: 2MB. Measurement Deﬁnitions of Inductance Equivalent Circuits and Inductive Element Models Measurement Methods Current-Voltage Methods • Bridge Methods • Differential Methods • Resonance Methods Instrumentation Inductance is an electrical parameter that characterizes electric circuit elements (two- or four-terminalFile Size: KB.

Page - This ratio may take a value of two or more. It should be clearly understood just what is meant by the quantity R which this method measures. It is a quantity which, expressed in ohms and multiplied by the square root of the mean square value of the alternating current through the circuit, expressed in amperes, will give the square root of the mean square value of that . Method of Measurement of Low Resistance • Voltmeter and Ammeter Method • Kelvin Bridge Method • Kelvin’s Double Bridge Method • Recall our classification done above, as we move from top to bottom the value of resistance decreases hence, we require more accurate and precise device to measure the low value of resistance • We need some. These test methods are not suitable for use in measuring the electrical resistance/conductance of moderately conductive materials. Use Test Method D to evaluate such materials. This standard describes several general alternative methodologies for measuring resistance (or conductance).File Size: KB. The measurement method can be used to compare the resistance standards in the range of mΩ–10 Ω with a measurement uncertainty lower than 10 ppm. The whole measurement method has been automatized using LabVIEW program that also controls special modules like range selector, current reversal module, digitizer reversal module and DAQ by: 3.

THOMPSON: Inductance Calculation Techniques Part II: Approximations and Handbook Methods Power Control and Intelligent Motion, December , website http://www File Size: KB. Although there are a number of methods available to calculate these inductances, none of them is considered standard. Accuracy levels of all these methods are also not consistent, and some of the measurement methods require complicated by: Q.3 (a) Discuss a method for measurement of low resistance. [5] (b) Explain the operation of a Wagner’s earthing device. [5] Q.4 Derive the errors of CT and PT, and discuss its preventives. [10] Q.5 (a) Discuss about a ac bridge used for measurement of capacitance [5] (b) Discuss about a galvanometer which is used for measurement of frequency. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental .

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