#1. A 3-phase power system is shown in Fig. 1. A load of 60 kVA is fed from a 240 V, voltage source. If phase 'a' of the 3-phase load voltage, Van = 170/20⁰, V; Z70₂2+8)52 Z (i) What is the PHASOR VOLTAGE (magnitude and angle) of the supply source, VAB? (ii) Find the PHASOR LINE CURRENT (magnitude and angle), IA, drawn by the load.n } a Load 60 KVA 10.9 Pf lag. Z TUM Fig. 1

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Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.