Unit III
1.
Define
Impact of jets?
2.
State
and explain momentum equation. What are the practical applications of it?
3.
Obtain
an expression for the force exerted by a jet of water on a fixed vertical plate
in the direction of the jet.
4.
Obtain
an expression for the force exerted by a jet of water on a fixed inclined plate
in the direction of the jet.
5.
Obtain
an expression for the force exerted by a jet of water on a fixed curved plate
in the direction of the jet.
6.
Obtain
an expression for the force exerted by a jet of water on a moving vertical
plate in the direction of the jet.
7.
Obtain
an expression for the force exerted by a jet of water on a moving inclined
plate in the direction of the jet.
8.
Obtain
an expression for the force exerted by a jet of water on a moving Curved plate
in the direction of the jet.
Unit IV
9.
Define Hydraulic Efficiency of turbine
10. Draw
typical velocity triangles for inlet and outlet of Pelton wheel.
11. Draw
typical velocity triangles for inlet and outlet of Francis Turbine
a.
When
b < 900
b.
When
b = 900
c.
When
b > 900
12. Distinguish
between Impulse and Reaction Turbines.
13. How are turbines
classified? Explain
14. What do you
understand by unit speed of a turbine? What is its use?
15. Distinguish
between unit speed and specific speed
16. How do you
compare the performance of a turbine under different working conditions?
17. What are the
requirements of a governor in hydropower Installation?
18. What is a draft
tube? Why is it used in a reaction turbine? Explain with the help of sketches
two different types of draft tubes?
19. What are the
constant efficiency curves of a turbine? What are their uses?
20. What is
Cavitation? What are the physical indicators for the presence of cavitation in
turbines?
Unit V
21. Define a
centrifugal pump. Explain the principle and working of a single stage
centrifugal pump.
22. What is
multistage pump and what are its advantages
23. What
is meant by priming of pumps?
24. Draw
typical velocity triangles for inlet and outlet of Centrifugal Pump
25. Obtain
expression for the work done by impeller of a centrifugal pump on water per
second per unit weight of water
26. Define
specific speed of a centrifugal pump. What is its significance?
27. Define
static and manometric head of a centrifugal pump. State the different types of
head losses which may occur in a pump installation.
28. Define
Cavitation. What are the effects of cavitation? Give necessary precautions
against cavitation
Numerical Problems
Practice all questions which are covered in Class Room
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