0800MPT203122004 Pages: 3

Reg No.: Name:

Max. Marks: 100

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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Third Semester B.Tech Degree Examination December 2020 (2019 Scheme)

Course Code: MPT203
Course Name: FLUID MECHANICS AND MACHINERY

PARTA

Answer all questions. Each question carries 3 marks
State Newton’s law of viscosity. What are Newtonian fluids?
What do you mean by compressible and incompressible fluids?
How a differential manometer differ from simple manometer.
Explain the term metacenter and metacentric height.
What is the difference between laminar and turbulent flow?
Explain the phenomenon of water hammer.
What are the design features of a Pelton wheel?
Define specific speed of a turbine.

State slip, percentage slip and negative slip of a reciprocating pump.

10 What is the need of priming in a centrifugal pump?

11

12

PART ‏تا‎

Answer any one full question from each module. Each question carries 14 marks

Module 1
a) What is capillarity? Derive an expression for capillary rise in a tube.
b) Calculate density, specific gravity, weight of 2 litre of petrol of specific
gravity 0.7.
a) Explain the terms compressibility, bulk modulus and vapour pressure.
b) The dynamic viscosity of oil used for lubrication between a shaft and sleeve
is 6 poise. The shaft is of diameter 0.4m and rotates at 190rpm. Calculate the
power lost in the bearing for a sleeve length of 90mm. The thickness of oil film

is 1.5mm.

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Duration: 3 Hours

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