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MAE 2055: Mechetronics I
Mechanical and Aerospace Engineering
Fall 2013
Homework 5
1) Find the Thévenin equivalent circuit for each of the following networks.
R1
R1
R2
+
Vs
R2
Is
(a)
Vs
R2
+
R1
(b)
+
+
Vs
V
Is
+
Is
R1
R2
-
-
(c)
V
(d)
2) Find the Norton equivalent circuit for each of the circuits in 1).
3) The open-circuit voltage of a car battery is measured to be 12 V. During engine startup, the battery
delivers 10 A to the starter motor, and the battery voltage drops to 11.7 V. Draw the Thévenin
equivalent circuit for the battery. How much power does the battery deliver to the starter motor?