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Engineering · Electrical Engineering
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Questions and answers are here, need solution process.2. a) What are the main merits of three-phase systems over single-phase systems? b) For the three-phase Y-connected load of Figure Q2 (b): i) What is the net current and voltage at the neutral point n? Explain your 5 answer with the aid of phasor diagram(s) ii) Find the average (real) power to each phase and the total real power. iii) Determine the reactive power to each phase and the total reactive power. 4 iv) Find the apparent power to each phase and the total apparent power. v) Find the power factor of the load and comment on its type. 173.2 V L0° 173.2 V L+ 120° 173.2 V L- 120° Figure Q2 (b)c) Given a three-phase unbalanced Y-connected load, design a power measurement 4 setup to measure the total real load power for a three-wire system using only two Wattmeters. Provide the required equations to support your answer.Q2. ii. PL-1200 W. Total power- 3*PL 3*1200 3600 W. iii. QL 1600 var Total reactive- 3*1600 4800 var iv. S-2000 VA, Total S-3*2000 6000 VA v. PF cos(53.13) 0.6 lagging. COS

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