Question 1 a.Find the magnitude of phase voltage and current b.Find the average power to each phase and the total load. c.Determine the reactive power.

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Presentation transcript:

Question 1 a.Find the magnitude of phase voltage and current b.Find the average power to each phase and the total load. c.Determine the reactive power to each phase and the total reactive power d.Find the apparent power to each phase and the total apparent power

Question 2 Calculate the magnetic flux for the magnetic circuit in Figure above.

Question 3 In no-load test of single phase transformer, the following test data were obtained : Primary voltage : 220 V ; Secondary voltage : 110 V Primary current : 0.5 A ; power input : 30 W Resistance of the primary winding = 0.6 ohm Find the following : a.The turn ratio b.The magnetising component of no load current c.Its working (or loss) component d.The iron loss