An ideal gas with k = 1.4 is flowing through a nozzle such that the mach number is 1.6 where the flow area is 70 cm2. approximating the flow as isentropic, determine the flow area at the location where the mach number is 0.8. use data from tables. the flow area at the location where the mach number is 0.8 is cm2.

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

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.