Hydraulics Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. *The wetted perimeter of a channel is given by

a) 4.75Q^2

b) 4.75Q

c) 4.75√Q

d) none of the above

2 / 30

2. The upward water pressure at the base of the structure is called

a) up

b) down

c) uplist

d) downlift

3 / 30

3. *The notch angle for the maximum discharge over a triangular notch is

a) 30°

b) 60°

c) 90°

d) 120°

4 / 30

4. Practical fluids possess

a) viscosity

b) surface tension

c) compressibility

d) all of the above

5 / 30

5. In an open channel flow

a) the velocity distribution is symmetrical about the pipe axis

b) the maximum velocity occurs at a little distance below the water surface

c) flow cross-section is fixed

d) the flow takes place at the expense of hydraulic pressure

6 / 30

6. *The hydraulic ram is a pump that works on

a) the principle of water hammer

b) the principle of centrifugal action

c) the principle of reciprocation action

d) all of the above

7 / 30

7. A substance which deforms continuously under the action of shear stress is called

a) fluid

b) liquid

c) solid

d) gas

8 / 30

8. *The upper surface of the notch over which water flows is known as

a) vein

b) nappe

c) sill

d) none of the above

9 / 30

9. If the Froude number in open channel flow is equal to 1.0, the flow is called

a) critical flow

b) streaming flow

c) shooting flow

d) none of the above

10 / 30

10. For the same specific force, the two depths at which the same discharge occurs are called

a) alternate depths

b) conjugate depths

c) critical depths

d) normal depths

11 / 30

11. *The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid if

a) the area is horizontal

b) the area is vertical

c) the area is inclined

d) all of the above

12 / 30

12. The head of water representing in the case of HGL line is known as

a) static head

b) residual head

c) pressure head

d) all of the above

13 / 30

13. When the fluid is at rest, the shear stress is

a) maximum

b) zero

c) unpredictable

d) none of the above

14 / 30

14. *A stepped notch is a combination of

a) rectangular notches of different sizes

b) triangular notches of different sizes

c) rectangular and triangular notches

d) all of the above

15 / 30

15. The phenomenon of rising of a liquid surface in a tube of small diameter relative to the adjacent normal level of the liquid is known as

a) capillary rise

b) capillary fall

c) rising

d) none of the above

16 / 30

16. *To measure atmospheric pressure, we use

a) barometers

b) piezometer

c) manometers

d) differential manometers

17 / 30

17. Velocity of flow may be determined using:

a) division of discharge to the area of flow

b) product of area and discharge divided by 100

c) product of wetted perimeter and hydraulic radius

d) all of the above

18 / 30

18. *The imaginary line joining each head of water is called

a) hydraulic gradient line

b) residual line

c) loss of gradient line

d) none of the above

19 / 30

19. *The magnitude of water hammer depends upon

a) the length of the pipeline

b) elastic properties of liquid

c) elastic properties of the pipe material

d) diameter of the pipeline

20 / 30

20. The two depths at which the specific energy is the same are called

a) alternate depths

b) conjugate depths

c) critical depths

d) normal depths

21 / 30

21. *The rate of flow through a V-notch varies as:

a) H

b) H1/2

c) H3/2

d) H5/2

22 / 30

22. *The term v^2/2g is known as

a) kinetic energy

b) pressure energy

c) kinetic energy per unit weight

d) none of the above

23 / 30

23. *Piezometers are used to measure

a) pressure in water channels, pipes, etc.

b) difference in pressure at two points

c) atmospheric pressure

d) very low pressure

24 / 30

24. An oil of specific gravity 0.7 and pressure 0.14 kgf/cm^2 will have the height of oil as

a) 70 cm of oil

b) 2 m of oil

c) 20 cm of oil

d) 80 cm of oil

25 / 30

25. *If the volume of a liquid weighing 2400 kg is 3 cubic meters, then 0.8 is its:

a) specific weight

b) specific mass

c) specific gravity

d) none of the above

26 / 30

26. The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particle at each point is called

a) path line

b) stream line

c) potential line

d) streak line

27 / 30

27. Which of the following has the highest coefficient of discharge:

a) sharp-edged orifice

b) venturimeter

c) cipolleti weir

d) borda's mouthpiece running full

28 / 30

28. *If the volume of liquid weighing 3000 kg is 4 cubic meters, then the specific gravity is

a) 750 kg/m^3

b) 12000 kg/m^3

c) 1.33

d) 0.75

29 / 30

29. Mouthpieces are used to measure

a) velocity

b) pressure

c) head

d) rate of flow

30 / 30

30. Cavitations is collapsed by

a) low pressure

b) high pressure

c) low velocity

d) high velocity

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Hydraulics Online Test – Paper 2

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