A 3phase Yconnected source supplies power to two threephase loads through a three phase cable having...
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A 3phase Yconnected source supplies power to two threephase loads through a three phase cable having an impedance of (0.2+j0.1) $2 per phase. Load 1 is Yconnected with an impedance of (12+j9) 2 per phase. Load 2 is Aconnected with an impedance of 27 230° per phase. Assume that the source, loads, and the cable impedances are all balanced, and the load voltage is maintained constant at 450 V, and the phase sequence is abc. (a) Calculate the line current, complex power, and power factor of the combined loads. (8 marks) (b) Determine the voltage, complex power and power factor of the source. (7 marks) (c) If the twowattmeter method is used to measure the total active power of the two loads, what would be the readings of the wattmeters. (5 marks) (d) Provide a solution to improve the power factor of the combined loads to unity. What is the corresponding current taken by the combined loads? (5 marks) A 3phase Yconnected source supplies power to two threephase loads through a three phase cable having an impedance of (0.2+j0.1) $2 per phase. Load 1 is Yconnected with an impedance of (12+j9) 2 per phase. Load 2 is Aconnected with an impedance of 27 230° per phase. Assume that the source, loads, and the cable impedances are all balanced, and the load voltage is maintained constant at 450 V, and the phase sequence is abc. (a) Calculate the line current, complex power, and power factor of the combined loads. (8 marks) (b) Determine the voltage, complex power and power factor of the source. (7 marks) (c) If the twowattmeter method is used to measure the total active power of the two loads, what would be the readings of the wattmeters. (5 marks) (d) Provide a solution to improve the power factor of the combined loads to unity. What is the corresponding current taken by the combined loads? (5 marks)
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Answer rating: 100% (QA)
To solve this problem well follow these steps Step 1 Calculate the line current complex power and power factor of each load Step 2 Calculate the total complex power and power factor of the combined lo... View the full answer
Related Book For
Fundamentals Of Electric Circuits
ISBN: 9780073301150
3rd Edition
Authors: Matthew Sadiku, Charles Alexander
Posted Date:
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