Reg No.:

Max. Marks: 100

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02000CE206052001

Pages: 3

Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fourth semester B.Tech examinations (S), September 2020

Course Code: CE206
Course Name: FLUID MECHANICS II (CE)

PARTA
Answer any two full questions, each carries 15 marks.

Find the type of the turbine which should be used under a head of 150 m to
develop 1500 KW while running at 300 rpm, based on specific speed criteria.
A jet of water strikes on a smooth stationary curved plate at the centre. Derive
an equation for force exerted in the direction of the jet.
A Kaplan turbine, operating under a head of 20 m develops 20000 KW with an
overall efficiency of 66%. The speed ratio is 2 and flow ratio is 0.6. The hub
diameter of the wheel is 0.35 times the outer diameter of the wheel. Find the
diameter and speed of the turbine.
How priming is carried out in small and large centrifugal pumps? What is self-
priming pump?
A centrifugal pump delivers 0.04 m°/s of water to a height of 20 m through a
15 cm diameter pipe which is 100 m long. Calculate the manometric head if the
coefficient of friction is 0.15.
Derive an expression for specific speed of a centrifugal pump.
Find the ratio of forces exerted by a jet of water in the direction of jet when it
strikes normally

i) asmooth stationary flat plate

ii) a smooth flat plate moving in the direction of the jet at one half of the

velocity of the jet.

Compare Kaplan turbine and Francis turbine.
A centrifugal pump is running at 1000 rpm. The outlet vane angle of the
impeller is 45° and velocity of flow at outlet is 2.5 m/s. The discharge through

the pump is 200 litres/s when the pump is working against a total head of 20m.

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Duration: 3 Hours

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