A centrifugal pump is to deliver 227 m³/hr of water from a source 4 meters below the pump to a pressure tank whose pressure is 28kg/m². Friction losses are estimated 2m in the suction line and 1m in the discharge line. The diameter of the suction pipe is 250mm and the discharge pipe is 200mm. Find the kw rating of the driving motor if the pump efficiency is 70%.

Hi please show calculations or diagrams if required thank you

Control volume concept can be used to obtain forces in both internal and external flow. By drawing a control volume around a region of fluid to expose the stresses acting on the boundaries and applying the conservation of mass and conservation of momentum in integral form, the net forces acting on the fluid and hence the reaction forces acting on the solid boundary can be calculated. The advantages of this approach over differential approach are: (i) It is an easy way to obtain net forces. (ii) It gives a detailed understanding of how these forces are generated. (iii) It is commonly used in engineering practice to obtain reaction forces on pump, turbine, elbow, etc. for the design of anchoring fixtures/foundation. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above

to stop bleeding of capillary, which better tools material the one has higher thermal conductivity k or the one has a lower thermal conductivity? and why ?