b)
a)

b)

a)
b)

0)

೩)

0)

०)
9)

0)

00000CE203121901

35° to the horizontal. The specific gravity of petrol is 0.81 and throat area ratio
is 4. If the difference in mercury levels in the gauge is 50 mm, calculate the
flow in litres/hour if the pipe diameter is 0.3 m. Take coefficient of discharge of
veturimeter as 0.975.

Explain Cipolletti weir and proportional weir.

A weir of length 48 m is divided into 10 equal bays by vertical posts of width
0.5 m. Calculate the discharge over the weir by using Francis formula if the
head over the crest of the weir is 1.4 m and the velocity of approach is 2.5 m/s.
An orifice in the side of a large tank is rectangular in shape 1.2 m wide and 0.7
m deep. The water level on one side of the orifice is 1.2 m above the top edge
and the water level on the other side of the orifice is 0.25 m below the top edge.
Compute the discharge if (५0.62.

PART C
Answer any two full questions, each carries 20 marks.
Differentiate between hydraulic gradient line and total energy line.

Derive the expression for loss of head for laminar flow between fixed parallel
plates. Also show that the maximum velocity is 1.5 times the average velocity.
Explain Blasius’ boundary layer equations for laminar and turbulent boundary
layer.

What is meant by boundary layer separation? What are the methods for
controlling boundary layer separation?

Find the displacement thickness and momentum thickness for the velocity
distribution in the boundary layer given by = =2 [இ − 0

Explain Pressure drag, friction drag, and profile drag.

An oil of viscosity 0.1Ns/m” and relative density 0.9 is pumped through a 32
mm diameter pipe. If the pressure drop per meter length of the pipe is 20kN/m”,
find (i) the mass flow rate (ii) maximum shear stress iii) type of flow and power
required per metre length of the pipe to maintain the flow

A flat plate 2m x 2m moves at 40km/hour in stationary air of density 1.25kg/m° ⋅
If the coefficients of drag and lift are 0.2 and 0.8 respectively find the (1) lift
force (ii) drag force (iii) resultant force and (iv) power required to keep the plate

in motion

Page 2 of 2

(6)
(7)

(7)

(4)
(12)

(4)

(6)

(8)

(6)
(12)

(8)