A centrifugal pump having outer diameter equal to two times the inner…

Question

A centrifugal pump having outer diameter equal to two times the inner diameter and running at 1000 rpm, works against a total head of 40 m. The velocity of flow through the impeller is constant and equal to 2.5 m/s. The vanes are set back at an angle of 40° at outlet. If the outer diameter of the Impeller is 500 mm and width at outlet is 50 mm. Find :

(i) Vane angle at inlet

(ii) Work done by impeller on water per second, and

(iii) Mano-metric efficiency.

Related pages

• Centrifugal Pumps — topic
• Fluid Machinery syllabus

More PYQs on Centrifugal Pumps

• A multi-stage pump is required to feed preheated water to a boiler. The quantity of water to be handled is 40 liter per second against a pressure difference of…
• A centrifugal blower rotates at 1400 rpm. Air enters into the impeller normal to the blades and exits at an angle of $25^\circ$. The inlet radius is $r_1 = 56.…
• A centrifugal pump impeller has an outer dia of $30\text{cm}$ and an inner dia of $15\text{cm}$. The pump runs at $1200\text{rpm}$. The impeller vanes are set…