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25 July, 09:03

Assume the impedance of a circuit element is Z = (3 + j4) Ω. Determine the circuit element's conductance and susceptance.

A. G = 120 mS, B = j160 mS

B. G = 333 mS, B = j250 mS

C. G = 108 mS, B = - j194 mS

D. G = 160 mS, B = j108 mS

E. G = 120 mS, B = - j160 mS

F. None of the other answers is correct

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  1. 25 July, 10:02
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    B. G = 333 mS, B = j250 mS

    Explanation:

    impedance of a circuit element is Z = (3 + j4) Ω

    The general equation for impedance

    Z = (R + jX) Ω

    where

    R = resistance in ohm

    X = reactance

    R = 3Ω X = 4Ω

    Conductance = 1/R while Susceptance = 1/X

    Conductance = 1/3 = 0.333S

    = 333 mS

    Susceptance = 1/4 = 0.25S

    = 250mS

    The right option is B. G = 333 mS, B = j250 mS
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