# Hydraulics Mock test – 4 || Civil Engineering Mock tests

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1. The hydraulic mean depth for a circular pipe of diameter (d) is
2. A notch is used to measure __________ of liquids.
3. The hydraulic mean depth or the hydraulic radius is the ratio of
4. The units of dynamic or absolute viscosity are
5. An error of 1% in measuring head over the crest of the notch (H) will produce an error of __________ in discharge over a triangular notch,
6. Barometer is used to measure
7. The coefficient of venturi-flume, generally, lies between
8. The stress-strain relation of the Newtonian fluid is
9. A flow whose streamline is represented by a curve, is called
10. The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head  lost due to friction in the pipe)
11. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
12. The specific gravity of water is taken as
13. The weight per unit volume of a liquid at a standard temperature and pressure is called
14. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by
15. The value of coefficient of discharge is __________ the value of coefficient of velocity.
16. The unit of surface tension is
17. A flow in which the viscosity of fluid is dominating over the inertia force is called
18. The viscosity of a liquid __________ its rate of flow through a hole in a vessel.
19. The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
20. The coefficient of discharge in case of internal mouthpiece is __________ that of external  mouthpiece.
21. A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
22. A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.
23. A flow in which the quantity of liquid flowing per second is not constant, is called
24. Euler's number is the ratio of __________ force to pressure force.
25. The flow of water through the hole in the bottom of a wash basin is an example of

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