The three impedances Z1 = 20∠30⁰Ω, Z2 = 40∠60⁰Ω, Z3 = 10∠-90⁰Ω are delta-connected to a 400V, 3 – Ø system. Find the power in the B phase.(a) 0(b) 1(c) 3(d) 2I got this question in examination.The question is from Three-Phase Unbalanced Circuits topic in division Polyphase Circuits of Network Theory

The three impedances Z1 = 20∠30⁰Ω, Z2 = 40∠60⁰Ω, Z3 = 10�

1.	The three impedances Z1 = 20∠30⁰Ω, Z2 = 40∠60⁰Ω, Z3 = 10∠-90⁰Ω are delta-connected to a 400V, 3 – Ø system. Find the power in the B phase.(a) 0(b) 1(c) 3(d) 2I got this question in examination.The question is from Three-Phase Unbalanced Circuits topic in division Polyphase Circuits of Network Theory
Answer» Correct answer is (a) 0 Easy explanation: The TERM power is defined as the PRODUCT of square of current and the IMPEDANCE. So the power in the B PHASE = 40^2 X 0 = 0W.

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