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A synchronous generator and motor are rated 30,000kVA, 13.2kV, and both have subtransient reactances of 20%....

A synchronous generator and motor are rated 30,000kVA, 13.2kV, and both have subtransient reactances of 20%. The line connecting them has a reactance of 10% on the base of the machine ratings. The motor is drawing 20,000kW at 0.8 power-factor leading and a terminal voltage of 12.8kV when a symmetrical three phase fault occurs at the generator terminals. Find

A synchronous generator and motor are rated 30,000kVA, 13.2kV, and both have subtransient reactances of 20%. The line connecting them has a reactance of 10% on the base of the machine ratings. The motor is drawing 20,000kW at 0.8 power-factor leading and a terminal voltage of 12.8kV when a symmetrical three phase fault occurs at the generator terminals.Find
(a) the subtransient currents in the generator and the motor
(b) the subtransient fault current
(c) the fault current contributions from the generator and motor.
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