Consider a converging-diverging nozzle with a throat area of 0.0015 and exit area of 0.002 . The stagnation pressure is 600 kPa and stagnation temperature is 10 a) When there is shock at section S having an area of 0.0018 , find the pressure and Mach number after the shock and at the exit. b) When there is no shock and the exit pressure is 580 kPa, find the velocity and Mach number at the throat.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa. s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)