Question
Asked Mar 6, 2020
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For the three circuit elelents in the image find Zeq

R
Z.
eq
volt-
asors
8.46.
n for Problem 8.52. For three circuit element o
s for binations shown in the figure below,
find Zeg given that w
L = 50 mH, R = 1 kQ.
com-
2000 rad/s,C = 5 µF,
uit
a)
eq
CL,
b)
AC
R
sor
eq
om-
c)
Proble
of any
L.
C.
C.
C.
help_outline

Image Transcriptionclose

R Z. eq volt- asors 8.46. n for Problem 8.52. For three circuit element o s for binations shown in the figure below, find Zeg given that w L = 50 mH, R = 1 kQ. com- 2000 rad/s,C = 5 µF, uit a) eq CL, b) AC R sor eq om- c) Proble of any L. C. C. C.

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Expert Answer

Step 1

The impedance offered by the inductor and the capacitor is given by,

Electrical Engineering homework question answer, step 1, image 1

And,

Electrical Engineering homework question answer, step 1, image 2

 

Step 2

Part (a)

All the elements are connected in parallel. So, the equivalent resistance can be expressed by the following expression.

Electrical Engineering homework question answer, step 2, image 1

NOTE:- Here, the parallel combination of L and C will offer infinite impedance, so the current will only flow through the resistor. Hence, the Thevenin impedance will be equal to the value of R.

Step 3

Part (b)

For this configuration, the resistor is in series with the parallel combination of L and C.

Electrical Engineering homework question answer, step 3, image 1

The given circuit will behave as an open circuit.

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