You have available to you of two pump styles: pump A at 1000 gal/min produces a 100 dBA SPL at a given distance, and pump B at 500 gal/min produces a 90 dBA at the same position. For a noise control point of view, which combination of pumps would be most acceptable for developing a flow rate of 2000 gal/min? Explain.

Fluids at rest possess no flow energy. a)- true b)- false

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

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.