Methods of Electrical Measurement |
Contents
THE A C POTENTIOMETER | 49 |
SIMPLE METHODS OF MEASUREMENT OF INDUCTANCE | 58 |
A C BRIDGE METHODS | 73 |
Copyright | |
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a.c. potentiometer a.c. Supply accuracy accurate adjusted alternating alternating current ammeter amperes anode arrangement B.Sc.II balance condition ballistic galvanometer bridge circuit bridge methods C₁ C₂ calibrated capacitance cathode-ray tube centimetre charge circuit of fig components connected in series constant deflection detector determined dielectric dimensions direct current e.s. units effect electrical quantities electron electrostatic equal flux density frequency give Hence hysteresis I₁ impedance induced e.m.f. insulation L₁ large number M.K.S. unit magnetizing force measurement meter mutual inductance non-inductive resistance number of turns obtained ohms parallel permeability phase angle plates potential difference potentiometer power factor practical units primary standard R₁ R₂ reactance reading resonance reversed S₁ screen search coil self-inductance sensitivity shown in fig shunt slide-wire solenoid specimen suitable switch tance terminals Thévenin's theorem unknown p.d. usually V₁ V₂ valve voltmeter variable voltage voltmeter volts wattmeter Wheatstone bridge wire Y-plates zero