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**Question 1. A circular duct carrying water gradually contracts from a diameter of 30 cm to 15 cm. The figure (not drawn to scale) shows the arrangement of differential manometer attached to the duct.When the water flows, the differential manometer shows a deflection of 8 cm of mercury (Hg). The values of specific gravity of mercury and water are 13.6 and 1.0, respectively. Consider the acceleration due to gravity, g = 9.81 m/s**

Solution:

Q= 0.081 m

(a) viscous and compressible fluid flow

(b) inviscid and compressible fluid flow

(c) inviscid and incompressible fluid flow

(d) viscous and incompressible fluid flow

Answer: (c)

Solution:

Bernoulliâ€™s equation is application for:

1. Flow along a stream line

2. When the effect of viscosity is negligible i.e., invisid flow

3. Incompressible flow condition

4. Steady flow condition

A pressure of 140 kPa is measured at section 1-1. The inlet diameter marked at section 1-1 is while the nozzle diameter marked at section 2-2 is Assume the following:

(i) Acceleration due to gravity = 10 m/s

(ii) Weights of both the bent pipe segment as well as water are negligible

(iii) Friction across the bend is negligible.

The magnitude of the force (in kN, up to two decimal places) that would be required to hold the pipe section is _________ . [2017 : 2 Marks, Set-I]

Solution:

Or

=2551.5 N

Resultant force

(a) 0.500

(b) 0.150

(c) 0.050

(d) 0.015

Answer:

Solution:

Diameter of throat,

D

Diameter of pipe,

D

Pressure difference

Since it is given that losses are negligible. Take coefficient of discharge as,

C

Discharge,

Solution:

Group-i

P. Anemometer

Q. Hygrometer

R. Pitot Tube

S. Tensiometer

Group-ll

1. Capillary potential of soil water

2. Fluid velocity at a specific point in the flow stream

3. Water vapour content of air

4. Wind speed [2014:1 Mark, Set-II

Answer:

Solution:

Tensiometer: It is used to measure capillary potential of soil water.

List-I

A. Pitot tube

B. Manometer

C. Venturimeter

D. Anemometer

List-ll

1. Measuring pressure in a pipe

2. Measuring velocity of flow in a pipe

3. Measuring air and gas velocity

4. Measuring discharge in a pipe

Codes: [2010 : 1 Mark]

Answer:

Solution:

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