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DEVELOPMENT OF THE ELECTRICAL UNlTS
EXPERIMENTAL PROCEDURES ERRORS
AlDS TO COMPUTATlON
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accuracy adjustment alternating current ammeter amount arrangement balance battery calibration capacitance capacitor cent comparison component computed condenser connected constant construction convenient copper correct Courtesy critical damping current flowing current transformer curve decade deflection depends detector diagram dial dissipation factor effect electrical electrodynamometer equal equation factor field Figure flux frequency galvanometer gives impedance increase indicated inductor instrument insulating Kelvin bridge laboratory load magnetic Maxwell bridge measurements ment meter method number of turns ohmmeter ohms oscillator oscillograph parallel phase angle phase-angle error pointer potential transformer potentiometer primary quantity 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 Thevenin's theorem tion torque unbalance units unknown vector voltage voltmeter wattmeter Wheatstone bridge winding zero