# JNTU Kakinada B-Tech 2-2 RT22012 HYDRAULICS AND HYDRAULIC MACHINERY R13 April 2018 Question Paper

Code No: RT22012
II B. Tech II Semester Supplementary Examinations, April-2018
HYDRAULICS AND HYDRAULIC MACHINERY (Civil Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answer ALL the question in Part-A
3. Answer any THREE Questions from Part-B
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PART ?A
1. a)Classify different Types of flows with sketch
b)What is model write with example
c)Classify different types of turbines according to speed
d)Write about work done and efficiency
e)Define specific speed
PART -B
2. a) An open channel of trapezoidal section, 2.5 m at the base and having sides
inclined at 600 to the horizontal, has a bed slope of 1 in 500. It is found that when
the flow is 1.5 m3/s the depth of water in the channel is 0.5 m. Assuming the
validity of the Manning?s formula., calculate the flow when the depth is 0.7 m.
b) Differentiate between uniform and non-uniform flow; laminar and Turbulent flow.

3. a)Explain about Buckingham?s pi theorem
b) Define the term Reynold’s number and Froude’s number and Differentiate between
Tranquil and Torrential flow in open channel.

4. The internal and external diameter of an outward flow reaction turbine are 2.5m &
3m respectively. The turbine is running at 275 rpm and the rate of flow of water
through the turbine is 7m3/sec. the width of runner at inlet and outlet is equal to
300mm. head on turbine is 150m. neglecting the thickness of vanes and taking the
1. Velocity of flow at inlet and outlet
2. Vane angle at inlet and outlet

5. Explain the principle behind a centrifugal pump and also explain its working with
a neat sketch.

6. a)What is priming of a centrifugal pump? Why is it necessary?
b) What is the difference between single stage and multistage pumps?

7. Explain underground powerhouse and types of arrangement of underground
powerhouse with neat sketches

1 of 1
R13
SET – 1

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