2. A group of parallel connected small appliances on a 50 Hz system requires 20 kVA at 0.85 pf lagging when operated at

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2 A Group Of Parallel Connected Small Appliances On A 50 Hz System Requires 20 Kva At 0 85 Pf Lagging When Operated At 1 (437.1 KiB) Viewed 32 times

2. A group of parallel connected small appliances on a 50 Hz system requires 20 kVA at 0.85 pf lagging when operated at 230 V (rms). The impedance of the feeder(wire) connecting the source and the appliances is 0.02+j0.12 №. The voltage across the load is maintained at 230 V (rms). (a) What is the rms magnitude of the voltage at the source end of the feeder(wire connecting source and the load)? (2 Marks) (b) What is the average power (active power) loss in the feeder? (2 Marks) (c) What is the size of the capacitor (in microfarads) across the load end of the feeder is needed to improve the load power factor to unity (pf=1)? (2 Marks) (d) After installing the capacitor what is the rms magnitude of of the voltage at the supply end if the load voltage is maintained at 230 V (rms).(2 Marks) (e) What is the average power loss in the feeder? (2 Marks)