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1. Find the Thévenin equivalent circuit for the network external to resistor R in Fig.Jure below: 3. E-10V 20 2. Determine the Norton equivalent circuit for the network external to the 60resistor of Figure below: 玉冰菜 E = 20V20 40 木 Uving source tranformations, determine the voltage op acts the 3 ohm resi 100 (
Q1. AC Power Calculation 25 marks 1. For the following voltage and current phasors, calculate the complex power, apparent power, real power, and reactive power. Specify whether the pf is leading or lagging. (a) V = 120/30° V rms, I = 6.2/- 25⁰ A rms (b)V= 220/30ºVms, 1 = 0.50/60ºArms (c) V = 250/-10° V rms, I = 6.2/- 25° Arms (d)V= 110/30ºVrms, 1 = 0.40/-70ºArms (e) P = 100kW, pf = 0.88 lagging Q2. Power and Power Factor Correction 25 marks Given the circuit below, determine a) the overall power factor, b)the real power dissipated, c.) the total reactive and apparent power of the given circuit, d) the total current and e) the value of capacitance necessary to improve the pf to unity when connected to the load? 220/0° V 12kW 0.866 pf leading 16kW 0.85 pf lagging 201 VAR 06pflagging