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Question
In the figure, Z1=10∠−60∘, Z2=10∠60∘, Z3=50∠53.13∘. Thevenin's impedance seen from X-Y is
In the figure, Z1=10∠−60∘, Z2=10∠60∘, Z3=50∠53.13∘. Thevenin's impedance seen from X-Y is
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Solution
The correct option is A 56.66∠45∘
By Thevenin's theorem,
ZTh=ZX−Y=Z1||Z2+Z3
=Z1×Z2(Z1+Z2)+Z3
=10∠−60×10∠60(10∠−60+10∠60)+(50∠53.13)
=56.66∠45oΩ
By Thevenin's theorem,
ZTh=ZX−Y=Z1||Z2+Z3
=Z1×Z2(Z1+Z2)+Z3
=10∠−60×10∠60(10∠−60+10∠60)+(50∠53.13)
=56.66∠45oΩ
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