13 pages matching oscillograph in this book
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in Xray circuits peak r m s and mean readings milli
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accuracy adjusted alternating current ammeter ampere-hour ampere-turns amperes angle anode apparatus balance ballistic galvanometer battery bridge cable calculated calibrated capacitance cell circuit comprises condenser conductor connected constant core cycles per second damping deflection dial direct current disc dynamometer earth electrical electrodes electrostatic voltmeter equal error flux frequency full scale grid high resistance indicating instrument instru insulation resistance lamp linear load magnetic field magnetising maximum means measured megohms ment metal rectifier meter method metre milliammeter milliamperes movement moving coil instrument moving iron instrument mutual inductance necessary null obtained ohmmeter ohms operation oscillograph overload permanent magnet photometer pivoted pointer possible potential divider potentiometer power factor proportional pyrometer r.m.s. value range ratio reactance reading sensitivity series resistance shows shunt slide wire standard suitable supply switch temperature thermal thermo-couple three-phase torque units usually valve variable varying volt-amperes voltmeters and ammeters volts wattmeter wave-form Wheatstone bridge whilst winding zero