Air flows steadily through an adiabatic one-inlet and one-outlet turbine. the inlet conditions are 5mpa, 550k, and 120m/s and the exit conditions are 10 kpa, 325k, and 30m/s. the mass flow rate of air is 0.15kg/s. determine (a) the rate of work donw by the turbine, and (b) the turbine inlet area. neglect the effect of potential energy. assume air behaves like an ideal gas.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation