A 125 MVA 3-phase 20K, synchronous generator with (all in per unit) is in No-Load condition. All of a sudden, a single phase bolted fault occurs at Phase A. A) Find the fault current.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

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.

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.