A hot fluid at $${200^ \circ }C$$ enters a heat exchanger at a mass flow rate of $${10^4}\,\,kg/hr.$$ Its specific heat is $$2000$$ $$J/kg$$-$$K.$$ It is to be cooled by another fluid entering at $${25^ \circ }C$$ with a mass flow rate $$2500$$ $$kg/hr$$ and specific heat $$400$$ $$J/kg$$-$$K$$. The overall heat transfer coefficient based on outside area of $$20\,\,{m^2}$$ is $$250\,\,\,W/{m^2}K.$$ Find the exit temperature of the hot fluid when the fluids are in parallel flow.

In inventory planning, extra inventory is unnecessarily carried to the end of the planning period when using one of the following lot size decision policies:

One of the following statements about $$PRS$$ (Periodic Reordering System) is not true. Identify.

Which one of the following forecasting techniques is not suited for making forecasts for planning production schedules in the short range?