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The Design Continued When the Exciting Current
The Calibration of the Apparatus When the
The Mechanical and Electrical Features of
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adjusted air gap alternating current ampere turns amplifier input amplifier terminals amplitude Angular frequency apparatus arma armature coils Armature Deflection Record armature suffers armature voltage capacitance CLARENCE ALOIS ANDREE colls condensor connected in series D. C. excitation determine direct current direct or alternating equal equation exciting current field coils field current fixed displacement frequency gap length headphone inches input from calibrating integrating circuit labelled Armature Deflection leakage flux length of air magnetic flux magnitude of armature maximum deflection MIAw0 mid-position neoessary normal position Number of turns obtain optical lever Oscillograph deflections resulting peak value Peak voltage position marked probable error probable percentage error produce proportional proportionality constant reactance receives the voltage recording position scale reading shown in Fig small compared steady deflection strain recorder stress recorder term tion traveling microscope UNIVERSITY OF WISCONSIN value of field Vector magnitude voltage across amplifier voltage ec voltage induced voltages A. C.