Basic Electrical Measurements |
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Page 2
... units was needed to permit the interchange of information between different experimenters . Also , it was evident that the electrical units should not be a law unto them- selves , but should be related to the mechanical units of length ...
... units was needed to permit the interchange of information between different experimenters . Also , it was evident that the electrical units should not be a law unto them- selves , but should be related to the mechanical units of length ...
Page 3
... Units and Concrete Standards Before going further in the history of the electrical units , it seems advisable to point out the difference between a unit as defined theoretically and a standard used for actual measurement purposes . The ...
... Units and Concrete Standards Before going further in the history of the electrical units , it seems advisable to point out the difference between a unit as defined theoretically and a standard used for actual measurement purposes . The ...
Page 9
... Units and the Practical Units International agreement for the change from the CGS to the MKS system of units occurred in the same period ( 1930-40 ) that witnessed a great deal of the discussion of the change in the size of the volt ...
... Units and the Practical Units International agreement for the change from the CGS to the MKS system of units occurred in the same period ( 1930-40 ) that witnessed a great deal of the discussion of the change in the size of the volt ...
Contents
DEVELOPMENT OF THE ELECTRICAL UNITS | 1 |
EXPERIMENTS AND STATISTICAL ANALYSIS | 12 |
AIDS TO COMPUTATION | 80 |
Copyright | |
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a-c bridge accuracy accurate adjustment ammeter amount applied arrangement balance battery bridge circuit C₁ calibration capacitance capacitor cent comparison component computed connected constant construction correct critical damping current transformer curve cycles decade detector determined deviation difference dissipation factor effect electrical electrodynamometer element equation field Figure Find flux frequency galvanometer give impedance indicated inductance inductor instrument insulating Kelvin bridge laboratory limit load magnetic Maxwell bridge mean measurements meter method ohmmeter ohms oscillator oscillograph parallel phase angle phase-angle error phasor pointer possible potential transformer potentiometer precision primary quantity R₁ R₂ range ratio arms reading reference resistance resistor rheostat rheostat arm sample scale secondary sensitivity shield shown in Fig shows shunt slide wire standard cell switch temperature terminals thermal thermocouple torque unbalance units unknown variable voltage voltmeter wattmeter Wheatstone bridge winding zero