A500mva, 220kv/24kv, three phase y-δ transformer has an equivalent series impedance of 1 + j5 ω per phase referred to the high-voltage side. the transformer is supplying a three phase load of 500mva, 0.85 power factor lagging at a terminal voltage of 24 kv (line to line) on its low-voltage side. the primary is supplied from a feeder with an impedance of 0.5+ j1 ω per phase. determine the line-neutral voltage in kv across the load when it is referred to the transformer high side voltage.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.