Online Quiz on Hydraulics and Fluid Mechanics - Set 01 - ObjectiveBooks

# Online Quiz on Hydraulics and Fluid Mechanics - Set 01

## Hydraulics and Fluid Mechanics Quiz: Set 01

1. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.
Agree
Disagree

2. The ratio of the inertia force to the gravity force is called Froude number.
Agree
Disagree

3. If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.
True
False

4. A body floating in a liquid is said to be in a stable equilibrium, if its metacentre coincides with its centre of gravity.
True
False

5. The flow in a pipe is laminar, when Reynold number is less than 2000.
True
False

6. According to Pascal's law, the intensity of pressure at any point in a fluid at rest is the same in all directions.
Agree
Disagree

7. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced.
True
False

8. The vacuum pressure can be measured with the help of a Piezometer tube.
True
False

9. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
Correct
Incorrect

10. If the value of coefficient of discharge increases, the discharge through the orifice decreases.
True
False

11. The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.
Agree
Disagree

12. The flow at critical depth in an open channel is called torrential flow.
Yes
No

13. In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir.
True
False

14. The velocity of liquid flowing through an orifice varies with the available head of the liquid.
Agree
Disagree

15. When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free.
Correct
Incorrect

16. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.
Correct
Incorrect

17. When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
True
False

18. The property of a liquid which enables it to resist tensile stress is called its surface tension.
Agree
Disagree

19. In the manufacturing of lead shots, the property of surface tension is utilized.
Agree
Disagree

20. The coefficient of discharge is the ratio of theoretical discharge to the actual discharge through an orifice.
True
False

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