9. Figure Q2b shows a 240 Vrms, 50 Hz source, supplying three loads which can be described as follows:
Load Z1 draws 100 W of real power and 60 VAR of inductive reactive power.
Load Z3 consumes 206.155 VA of apparent power at a power factor of 0.243 lagging.
Total complex power supplied by the source is 200 + j400 VA.
Determine the overall power factor and the complex power absorbed by load Z2.
10. Draw the basic construction of a transformer with the complete label.
11. A single phase, 10kVA, 2400/240 V, 50 Hz transformer has the following parameters referred to the high voltage side:
Zeq = 6.5 + j18.4 Ω
Rc = 9500 Ω
Xm = 2500 Ω
i) Calculate the transformer parameters referred to the low voltage side.
ii) Draw and label numerically the equivalent circuit as in i).
iii) Determine the rated current at the high voltage side and low voltage side of the transformer.