Methods of Electrical Measurement |
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Page 78
... anode circuit contains a milliammeter . The normal anode current may be neutralized in the instrument , so that the indication of the instrument is zero when the a.c. input to the amplifier is zero , i.e. when the bridge is balanced ...
... anode circuit contains a milliammeter . The normal anode current may be neutralized in the instrument , so that the indication of the instrument is zero when the a.c. input to the amplifier is zero , i.e. when the bridge is balanced ...
Page 150
... anode to cathode potential differ- ence be Va volts , i.e. Va / 300 e.s. units . Then , if e e.s. units is the electric charge on one electron , its loss of potential energy in travelling from cathode to anode is Vae / 300 ergs . This ...
... anode to cathode potential differ- ence be Va volts , i.e. Va / 300 e.s. units . Then , if e e.s. units is the electric charge on one electron , its loss of potential energy in travelling from cathode to anode is Vae / 300 ergs . This ...
Page 153
... anode . It is normally convenient to work the tube with the conical portion and the anode at earth potential , so the terminal E , connected to the anode , is provided for earthing . The voltages which are required to produce the ...
... anode . It is normally convenient to work the tube with the conical portion and the anode at earth potential , so the terminal E , connected to the anode , is provided for earthing . The voltages which are required to produce the ...
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