HW#2-due date: (15/07/1439) 1. For the following circuit, determine the true pow
ID: 2033926 • Letter: H
Question
HW#2-due date: (15/07/1439) 1. For the following circuit, determine the true power, reactive power and apparent power. R- 200 230 V 2. A load is connected to a voltage of 1320 volts at 60 Hz. The load dissipates 100 kW with a 0.867 power factor. Specify the capacitance needed to correct the power factor to being 1. 8. Consider a circuit for a single-phase AC power system, where a 200 volt AC voltage source is delivering power to a loads. Find the true power, reactive power and apparent power delivered by 150 mA current. (Impedance phase angle ?-300)Explanation / Answer
1)
Impedance Z = sqrt(R2 + Zl2) = sqrt(202 + 32) = 20.22 ohm
Thus, current I = V/Z = 230/20.22 = 11.37 A
True Power = I2R
= 11.372 * 20 = 2586.8W
Reactive power = I2ZL
= 11.372 * 3 = 387.8 W
Apparent power = I2Z
= 11.372 * 20.22
= 2614W
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