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4. For the network of Fig. 16.42:<br />

a. Find the total impedance Z T.<br />

b. Calculate the voltage V 2 and the current I L.<br />

c. Find the power factor of the network.<br />

I = 5 A ∠ 0°<br />

5. For the network of Fig. 16.43:<br />

a. Find the current I.<br />

b. Find the voltage V C.<br />

c. Find the average power delivered to the network.<br />

R 1<br />

X L<br />

560 �<br />

+<br />

–<br />

+<br />

Z T<br />

R 1<br />

2 �<br />

X C<br />

4 �<br />

X L1<br />

6 �<br />

FIG. 16.42<br />

Problem 4.<br />

E = 100 V ∠ 0°<br />

+<br />

560 � –<br />

XC1 = 400 � VC –<br />

*6. For the network of Fig. 16.44:<br />

a. Find the current I 1.<br />

b. Calculate the voltage V C using the voltage divider rule.<br />

c. Find the voltage V ab.<br />

*7. For the network of Fig. 16.45:<br />

a. Find the current I 1.<br />

b. Find the voltage V 1.<br />

c. Calculate the average power delivered to the network.<br />

E = 120 V ∠ 60°<br />

+<br />

–<br />

R 1<br />

X L1<br />

I 1<br />

3 �<br />

4 �<br />

FIG. 16.44<br />

Problem 6.<br />

X C<br />

a Vab b<br />

X L2<br />

I<br />

R 2<br />

FIG. 16.43<br />

Problems 5 and 21.<br />

13 �<br />

7 �<br />

+<br />

VC –<br />

+ V 2 –<br />

R 2 = 8 �<br />

R 3 = 8 �<br />

X L2 = 3 �<br />

200 �<br />

E = 40 V ∠ 0°<br />

I L<br />

X C2 = 400 �<br />

+<br />

–<br />

I 1<br />

R 1<br />

10 �<br />

+<br />

V1 –<br />

FIG. 16.45<br />

Problems 7 and 16.<br />

PROBLEMS ⏐⏐⏐ 739<br />

X C<br />

60 �<br />

R 2<br />

20 �<br />

X L = 80 �

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