A PMMC instrument has a three-resistor Ayrton shunt connected across it to make an ammeter as in Figure 2. The resistance values are R1 = 4.52, R2=0.452 and R3= 0.052. The meter has Rm = 1k2 and If3.d = 50µA. Calculate the three ranges of the ammeter. [10.05mA, 100.05mA, 1.005A] Rm=1kn R. R, Selector Figure 2 to

A PMMC instrument has a three-resistor Ayrton shunt connected across it to make an ammeter as in Figure 2. The resistance values are R1 = 4.52, R2=0.452 and R3= 0.052. The meter has Rm = 1k2 and If3.d = 50µA. Calculate the three ranges of the ammeter. [10.05mA, 100.05mA, 1.005A] Rm=1kn R. R, Selector Figure 2 to

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter10: Contactors, Relays, And Overloads

Section: Chapter Questions

Problem 19RQ

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