Elements of Electrical Measurements |
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Page 103
... milliammeter . R Rx FIG . 6-6 . Basic circuit of crossed- coil ohmmeter . We have limited our discussion to ohmmeters used for measuring resistors . Similar designs can be used to measure capacitors or in- ductors . An additional ...
... milliammeter . R Rx FIG . 6-6 . Basic circuit of crossed- coil ohmmeter . We have limited our discussion to ohmmeters used for measuring resistors . Similar designs can be used to measure capacitors or in- ductors . An additional ...
Page 121
... milliammeter having a resistance of 10 ohms is connected across a pair of terminals , the reading is 20 milliamperes . The milliammeter is replaced by a volt- meter having a resistance of 200 ohms ; the reading is one volt . Determine ...
... milliammeter having a resistance of 10 ohms is connected across a pair of terminals , the reading is 20 milliamperes . The milliammeter is replaced by a volt- meter having a resistance of 200 ohms ; the reading is one volt . Determine ...
Page 122
... milliammeter having a resistance of 50 ohms . When the terminals are shorted the instrument reads full - scale . The scale is properly calibrated using these design values . a . Determine the value of R1 for the design values . b . The ...
... milliammeter having a resistance of 50 ohms . When the terminals are shorted the instrument reads full - scale . The scale is properly calibrated using these design values . a . Determine the value of R1 for the design values . b . The ...
Common terms and phrases
accuracy ammeter amplifier analog computer angle applied arms assume average balance basic block diagram bridge calibration called capacitor cell chapter circuit coil combination compared comparison complex components condition connected consider constant control system damping desired detector determine device differential direction electrical equal equation equivalent error example exist factor field figure frequency full-scale function galvanometer given impedance increase indicating input instrument internal known larger limit load magnetic magnitude means measure method motor moving necessary obtain ohmmeter ohms output particular peak PMMC portion position possible problem R₁ range ratio reading rectifier resistance resistor response result roots scale sensitivity Show shown in Fig signal simple solution standard term terminals tion torque transfer function unit unknown usually variable vary voltage voltmeter volts wattmeter wave yields zero