Hydraulics Online Test – Paper 2

0%

Created by

Vikash chaudhary

This is a FREE online test. Beware of scammers who ask for money to attend this test.

Get New Questions in Each Attempt

Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
Randomization: Yes
Certificate: No
Do not refresh the page!
👍 All the best!

1 / 30

1. Which of the following quantities are dimensionless?

a) surface tension

b) specific weight

c) angular velocity

d) Mach number

2 / 30

2. *Cipolletti weir is a trapezoidal weir having a side slope of

a) H:V::1:2

b) H:V::2:1

c) H:V::1:4

d) none of the above

3 / 30

3. *Bernoulli's equation assumes that

a) fluid is non-viscous

b) fluid is homogeneous

c) flow is along the streamline

d) all of the above

4 / 30

4. *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

5 / 30

5. Cavitations in flowing fluid occurs when

a) the total energy suddenly increases

b) the total energy suddenly decreases

c) the total energy is constant

d) none of the above

6 / 30

6. *A pitot tube is used to measure

a) pressure

b) different in pressure

c) velocity of flow

d) none of the above

7 / 30

7. *If the velocity, pressure, density, etc., change at a point with respect to time, the flow is called

a) uniform

b) compressible

c) unsteady

d) incompressible

8 / 30

8. *An independent mass of a fluid does not possess

a) elevation energy

b) kinetic energy

c) pressure energy

d) none of the above

9 / 30

9. 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

10 / 30

10. *The equation of continuity of fluids is applicable only if

a) the flow is steady

b) the flow is in-compressible

c) the flow is one-dimensional

d) all of the above

11 / 30

11. *The difference between the total energy line and the hydraulic gradient line is

a) kinetic head

b) pressure head

c) datum head

d) loss of head

12 / 30

12. A rise or fall of liquid in a glass tube of a very small diameter when dipped is

a) directly proportional to the force per unit length of periphery

b) directly proportional to the sine of the angle of contact

c) directly proportional to the specific weight of the liquid

d) inversely proportional to the diameter of the glass tube

13 / 30

13. The depth of flow after the hydraulic jump is

a) d2 = d1/2 [√1+8(Fe)1^2 -1]

b) d1 = d2/2 [√1+8(Fe)1^2 -1]

c) d2 = d1/3 [√1+8(Fe)1^2 -1]

d) d2 = d1/2 [√1+2(Fe)1^2 -1]

14 / 30

14. For the flow of liquid from an open-ended tube (nozzle) leading to the formation of a spray of liquid drops, the number generally is

a) Euler number

b) Froude number

c) Weber number

d) Reynolds number

15 / 30

15. From a nozzle exposed to the atmosphere, the liquid jet traverses

a) a straight line

b) a circular path

c) a parabolic path

d) an elliptical path

16 / 30

16. In an open tube, the free surface of mercury remains

a) horizontal

b) curved upwards

c) curved downwards

d) none of the above

17 / 30

17. Hydrostatic pressure on a dam depends upon its

a) length

b) depth

c) shape

d) both (b) and (c) of the above

18 / 30

18. In the case of a broad-crested weir, the depth of water h at the end of the still is given by

a) h = H/2

b) h = 2H/3

c) h = 3H/4

d) h = H

19 / 30

19. For a long pipe, the head loss

a) at the entrance is ignored

b) at the outlet is ignored

c) at the entrance and outlet both are ignored

d) due to friction is ignored

20 / 30

20. If the density of a fluid is constant from point to point in a flow region, it is called

a) steady flow

b) incompressible flow

c) uniform flow

d) rotational flow

21 / 30

21. The basic head loss in a long pipe is:

a) fittings

b) sudden increase in diameter

c) sudden decrease in diameter

d) friction

22 / 30

22. *The hydraulic radius is equal to

a) area divided by the square of the wetted perimeter

b) wetted area divided by the wetted perimeter

c) the wetted perimeter divided by the area

d) the square root of the area

23 / 30

23. If the pressure is applied to the surface of a liquid, the liquid transmits the pressure equally in all directions is given by

a) Pascal

b) Newton

c) Archimedes

d) all of the above

24 / 30

24. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called

a) steady

b) uniform

c) compressible

d) laminar

25 / 30

25. The difference in pressure head measured by a mercury-oil differential manometer for a 20 cm difference of mercury level will be (specific gravity of oil-0.8)

a) 2.72m of oil

b) 2.52m of oil

c) 3.20m of oil

d) 0.2m of oil

26 / 30

26. *Hydraulic gradient line (except siphon)

a) remains above the centerline of the conduit

b) remains below the centerline of the conduit

c) remains parallel to the centerline of the conduit

d) may be above or below the centerline of the conduit

27 / 30

27. The flow in which each liquid particle has a definite path is called

a) stream line flow

b) uniform flow

c) steady flow

d) turbulent flow

28 / 30

28. *The rate of flow through a venturimeter varies as

a) H^1/2

b) H^3/2

c) H^4/2

d) H^5/2

29 / 30

29. *The types of instrument used to measure low pressure with accuracy is

a) piezometer

b) barometer

c) micro manometer

d) mechanical gauge

30 / 30

30. To avoid an interruption in the flow of a siphon, the air vessel is provided

a) at the inlet

b) at the outlet

c) at the summit

d) at the point between the inlet and outlet

Your score is

0%

Please provide your feedback.

Thank you for your valuable feedback.

Buy Hydraulics MCQ PDF for Offline Study