P7.8 Consider again the power control system of Problem P7.7 when the steam turbine is replaced by a hydrotur

bine. For hydroturbines, the large inertia of the water used as a source of energy causes a considerably larger time constant. The transfer function of a hydroturbine may be approximated by

-TS+1 G(s)= (1/2)+1' where = 1 s. With the rest of the system remaining as given in Problem P7.7, repeat parts (a) and (b) of Problem P7.7.