from that indicated by the pressure-volume 
diagram because of certain losses incurred 
through the turbine section. For steady, sta- 
bilized operation of the turbojet engine the 
power extracted by the turbine will equal the 
power required to operate the compressor. If 
the turbine power exceeds the compressor 
power required, the engine will accelerate; if 
the turbine power is less than the compressor 
power required, the engine will decelerate.