Electrical Measurements and the Calculation of the Errors Involved, Part 1Macdonald, 1950 - Electric measurements |
Contents
ERRORS IN MEASUREMENTS | 9 |
Mar 50 Blackwell 252 Enge | 16 |
MEASUREMENT OF D C RESISTANCE | 24 |
13 other sections not shown
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a₁ a₂ ammeter amps arrangement Assuming balance becomes bridge cable calculated calibration cell charge checked circuit closed coil condenser connected Consider constant constructional error corresponding damping deflection determination dials difference discharge division E₁ equal Example field flux fluxmeter follows galvanometer given giving greater i₁ increase indication inductance insulation known limits logarithmic differential magnetic maximum means measured meter method moving noted ohms period pointer position potentiometer PRACTICAL precision produce R₁ R₂ ratio reading error relative error resistance result S₁ scale sensitivity setting shown in fig shunt sliding smaller standard standardising substandard suitable supply t₁ taken temperature torque turns V₁ varied voltage voltmeter volts wire write zero αι Φο