(c) A Low Voltage Distribution Board (LVDB) is feeding power supply for 15 street light poles as shown in Figure Q5(e). Each pole is equipped with high pressure natrium lamp rated at 250 W, 230 V, 50 Hz. Calculate the total current and designed current for the circuit. V D B 45 m 4₂ 30 m 4₂ 30 m L8 Lg LAD 30 m 30 m 30 m 30 m 30 m 4 30 m Ls Figure Q5(c): Street light circuit 30 m L6 30 m 30 m 30 m WOE 30 m 4 La Las Lu Lis

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A:

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A: Current is flow of electrical charge  These are of two type Dc current  Ac current

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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.