Basic Electrical Measurements |
Contents
DEVELOPMENT OF THE ELECTRICAL UNITS | 1 |
EXPERIMENTAL PROCEDURES ERRORS | 18 |
AIDS TO COMPUTATION | 41 |
Copyright | |
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a-c bridge accuracy adjustment alternating current ammeter amplifier arrangement balance battery bridge circuit C₁ calibration capacitance capacitor cent comparison component computed condenser connected constant construction convenient copper correct Courtesy critical damping current transformer curve cycles decade deflection depends detector diagram dial dissipation factor effect electrical electrodynamometer equal equation error factor field Figure flux frequency galvanometer give impedance indicated inductance 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 range ratio arms reading reference resistance resistor result rheostat scale secondary sensitivity shielding shown in Fig shows shunt slide wire standard cell switch temperature terminals thermocouple Thevenin's theorem tion torque unbalance unknown usually volt voltage voltmeter volts wattmeter Wheatstone bridge winding zero μα