Hot water flows with a velocity of $$0.1$$ $$m/s$$ in a $$100mm$$ long, $$0.1m$$ diameter pipe. Heat lost from the pipe outer wall is uniform and equal to $$420$$ $$W/{m^2}$$. If the inlet water temperature is $${80^ \circ }C,$$ calculate the water temp at the exit. Neglect effect of pipe wall thickness. $${C_p}$$ (water) $$=4.2$$ $$kJ/kg$$-$$K$$ and density of water $$=1000$$ $$kg/\,{m^3}.$$

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

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:

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