Power in Three-phase Circuits - Engineering Assignment Help

Assignment Task

Topic : Power in three-phase circuits

1 [9] A 3-phase, 3-wire, 100V ABC system supplies a balanced delta connected load with impedances of 20?45° ohms.
(a) [3] Determine the power in each phase and hence determine total power.
(b) [1] Determine the power factor
(c) [1] Determine line current
(d) [4] Find the wattmeter readings when the two wattmeter method is applied to the circui

Q- A balanced three phase star connected load is connected to a 400V three-phase 50Hz supply. Each element of the load consists of an impedance of (3 + j4) ?.
(a) [3] Determine the total real power (P), reactive power (Q) and apparent power (S)
(b) [1] What is the power factor?
(c) [6] Draw the power triangle and label all components including phase angle
(d) [5] Determine the overall VAr rating of a bank of capacitors to be connected in parallel with the load to correct the power factor to 0.9

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