Ammeter internal model 25 Q Rs R2 R4 ww Ammeter R3: Vs R3
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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Question
An ammeter is used as shown in Figure P2.78. The
ammeter model consists of an ideal ammeter in series
with a resistance. The ammeter model is placed in the
branch as shown in the figure. Find the current through
R5 both with and without the ammeter in the circuit for the following values, assuming that RS = 20 ,
R1 = 800 , R2 = 600 , R3 = 1.2 k, R4 = 150 ,
and VS = 24 V.
a. R5 = 1 k
b. R5 = 100
c. R5 = 10
d. R5 = 1
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