Electrical Measurements and Measuring Instruments |
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accuracy adjusted alternating current ammeter amperes amplifier anode apparatus applied balance bridge network C₁ cable calibration capacitance capacitor cent charge circuit coefficient conductor connected constant core current coil current transformer curve damping deflection diagram dielectric direction disc earth eddy currents effect Electrical electrons electrostatic energy equation error flux density frequency galvanometer given gives harmonic high-voltage impedance inductor instrument insulation iron Jour lamp length load loop magnetic field measured meter method metre moving coil moving system moving-coil mutual inductance non-inductive number of turns obtained ohms oscillator oscillograph phase angle plates pole potential difference potentiometer power factor primary R₁ R₂ ratio resistance resistor rotation search coil secondary self-inductance shown in Fig shunt slide-wire specimen standard supply surface switch temperature torque tube unit V₁ valve vector voltage coil voltage drop voltmeter volts wattmeter wave wave-form Wheatstone bridge winding wire zero