The per-unit impedance of a circuit element is 0.30. If the base kV and base MVA are both halved, then the new value of the per-unit impedance of the circuit element will be:

If a power system has a total demand of 1000 MW and a required spinning reserve of 10%, what should be the total available generation capacity?

A power system network with a base capacity of 100 MVA has a source impedance of 10% (0.1 p.u.) at a given point. The short-circuit fault level at that point is: