Acentrifugal pump is required to deliver 33,6 m^3/s of water per minute against a head of 12 metres when driven at 750 r/min. the velocity of flow through the impeller is constant at 163 metres per minute. the estimated manometric efficiency will be 80% and the internal head loss in the pump calculated at 0,0276 v22 metres where v2 is in m/s. calculate : 1)- the effective area of the impeller at exit. 2)- the diameter of the impeller at exit. 3)- the outlet vane angle.

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.