KERALA UNIVERSITY Class 4 fluid machinery Question Paper 2019

Practice authentic previous year questions for better exam preparation.

Sample Questions

(b) A single-stage centrifugal pump with impeller diameter of 300 mm rotates at 2000 r.p.m. and lifts $3 \mathrm{~m}^{3}$ of water per second to a height of 30 m with an efficiency of $75 \%$. Find the number of stages and diameter of each impeller o...
(a) Prove that the manometric head of a centrifugal pump running at speed N and giving a discharge Q may be written as: $\mathrm{H}_{\text {mano }}=\mathrm{AN}{ }^{2}+\mathrm{BNQ}+\mathrm{CQ}^{2}$, where $A, B$ and $C$ are constants.
(b) The following data pertains to a centrifugal compressor: Total pressure ratio = 3.6:1 Diameter of inlet eye of compressor impeller $=350 \mathrm{~mm}$ Axial velocity at inlet $\quad=140 \mathrm{~m} / \mathrm{s}$ Mass flow $=12 \mathrm{Kg} / \mat...
(i) The guide blade angle, (ii) The wheel vane angle at inlet, (iii) Diameter of the wheel at inlet, and (iv) Width of the wheel at inlet.
(a) What is a draft tube? What are its different types? Explain the theory of draft tube.