Apump operating at steady state receives 1.5 kg/s of liquid water at 50oc, 1.5 mpa. the pressure of the water at the pump exit is 15 mpa. the magnitude of the work required by the pump is 25.2 kw. stray heat transfer and changes in kinetic and potential energy are negligible. determine the work required by a reversible pump operating with the same conditions, in kw, and the isentropic pump efficiency.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false