Basic Electrical Measurements |
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Page 15
... convenient and readable scale , so that interpolation may be made easily . Do not use an inconvenient number of units , such as 3 or 7 , etc. , for a division . Preferably , use 1 , 2 , or 5 . ( 3 ) Select a scale so that the graph is ...
... convenient and readable scale , so that interpolation may be made easily . Do not use an inconvenient number of units , such as 3 or 7 , etc. , for a division . Preferably , use 1 , 2 , or 5 . ( 3 ) Select a scale so that the graph is ...
Page 179
... convenient to use , but also opened the possibility of other circuits that could not be balanced by the d - c method . The credit for the definite change from d - c to a - c belongs to Max Wien , who in 1891 laid down the basic ...
... convenient to use , but also opened the possibility of other circuits that could not be balanced by the d - c method . The credit for the definite change from d - c to a - c belongs to Max Wien , who in 1891 laid down the basic ...
Page 208
... convenient for numerical work of this sort . Building up a vector diagram for a bridge follows the same process of ... convenience , although at least part of the resistances would in practice reside within the inductance coils . R3 ...
... convenient for numerical work of this sort . Building up a vector diagram for a bridge follows the same process of ... convenience , although at least part of the resistances would in practice reside within the inductance coils . R3 ...
Contents
DEVELOPMENT OF THE ELECTRICAL UNITS | 1 |
EXPERIMENTAL PROCEDURES ERRORS | 13 |
AIDS TO COMPUTATION | 39 |
Copyright | |
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accuracy adjustment alternating current ammeter amount ampere arrangement balance battery bridge circuit burden C₁ calibration capacitance capacitor cent comparison component computed condenser connected constant construction convenient copper correct Courtesy critical damping current transformer curve decade deflection detector diagram dial dissipation factor effect electrical electrodes electrodynamometer equal equation factor field Figure flux frequency galvanometer gives impedance increase indicated inductor instrument insulating laboratory load magnetic Maxwell bridge measurements ment meter method number of turns ohmmeter ohms oscillator oscillograph parallel phase angle pointer potential transformer potentiometer primary quantity R₁ R₂ Radio range ratio arms reactance reading reference resistance resistor result rheostat scale search coil secondary sensitivity shield shown in Fig shows shunt slide wire standard cell switch temperature terminals thermocouple Thevenin's theorem tion torque unbalance units unknown vector voltage voltmeter wattmeter Wheatstone bridge winding zero