(a) Consider the non-lifting flow over a circular cylinder of a given radius withV[infinity]= 20 ft/s. IfV[infinity]is doubled, that is, V[infinity]= 40 ft/s, does the shape of the streamlines change? Explain.(b) Consider the lifting flow over a circular cylinder of a given radius with a given circulationΓ. IfV[infinity]is doubled, keeping the circulation the same, does the shape of the streamlineschange? Explain.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false