Basic Electrical Measurements |
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Page 80
... terminals I A B -O B ' A I as shown in Fig . 4-21 . One pair of terminals is used to lead the current to and from the resistor . The voltage drop is measured be- tween the other pair of terminals . The voltage E , indicated in Fig . 4 ...
... terminals I A B -O B ' A I as shown in Fig . 4-21 . One pair of terminals is used to lead the current to and from the resistor . The voltage drop is measured be- tween the other pair of terminals . The voltage E , indicated in Fig . 4 ...
Page 89
... terminals and between each main terminal and the guard form a three - terminal Wire wound around Ga insulation to form guard A - Conductor Lead Sheath -Insulation E Holode B 1 ohm 104 108 C Ga 108 104 108 ohms FIG . 4-29 . ( a ) ( b ) ...
... terminals and between each main terminal and the guard form a three - terminal Wire wound around Ga insulation to form guard A - Conductor Lead Sheath -Insulation E Holode B 1 ohm 104 108 C Ga 108 104 108 ohms FIG . 4-29 . ( a ) ( b ) ...
Page 108
... terminals which are most remote from the link . The galvanometer is bridged successively from the junction of the rheostat and ratio arms to first one and then the other of the two potential terminals nearest the link , and the ...
... terminals which are most remote from the link . The galvanometer is bridged successively from the junction of the rheostat and ratio arms to first one and then the other of the two potential terminals nearest the link , and the ...
Contents
DEVELOPMENT OF THE ELECTRICAL UNITS | 1 |
EXPERIMENTAL PROCEDURES ERRORS | 13 |
AIDS TO COMPUTATION | 39 |
Copyright | |
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accuracy adjustment alternating current ammeter amount ampere arrangement balance battery bridge circuit burden C₁ calibration capacitance capacitor cent comparison component computed condenser connected constant construction convenient copper correct Courtesy critical damping current transformer curve decade deflection detector diagram dial dissipation factor effect electrical electrodes electrodynamometer equal equation factor field Figure flux frequency galvanometer gives impedance increase indicated inductor instrument insulating laboratory load magnetic Maxwell bridge measurements ment meter method number of turns ohmmeter ohms oscillator oscillograph parallel phase angle pointer potential transformer potentiometer primary quantity R₁ R₂ Radio range ratio arms reactance reading reference resistance resistor result rheostat scale search coil secondary sensitivity shield shown in Fig shows shunt slide wire standard cell switch temperature terminals thermocouple Thevenin's theorem tion torque unbalance units unknown vector voltage voltmeter wattmeter Wheatstone bridge winding zero