Turbomachinery Aerodynamics

Question 20: Flow in a exit duct of a radial turbine may be diffused

to allow higher static pressure at the rotor exit plane

to allow lower static pressure at the rotor exit plane

to allow higher mass flow through the rotor

to allow higher rotor entry tmperature
 
Prof. Bhaskar Roy, Prof. A M Pradeep, Department of Aerospace, IIT Bombay