is Maximum at the center of the pipe section.

2. Density is defined in terms of viscosity

as dynamic viscosity/kinematic viscosity.

3. The Reynolds number for pipe flow is given

VDρ/µ.

4. SI unit of viscosity is 10 times

poise.

5. Kinetic viscosity is not a dimensionless

parameter.

6. The upper critical importance Reynolds’s number

for pipe flow is of no practical importance to

designers.

7. A liquid compressed in a cylinder has a

volume of 1 liter at 1 MN/m2 and a volume of 995 cu cm at MN/m2.

The bulk modulus of elasticity is 200 MPa.

8. The length of mercury column at a place at

an altitude will change with respect to that at ground first

slowly and then steeply.

9. The volumetric change of the fluid caused by a

resistance is called adhesion.

10. Property of a fluid whereby its own

molecules are attracted is known as cohesion.

11. The pressure at a point in a fluid will not be

the same in all directions if the fluid is viscous and is in

motion.

12. Pitot tube can be used to measure the flow

of water in a pipe of diameter 3000mm.

13. An ideal fluid is one that is frictionless

and incompressible.

14. Uniform flow takes place when at every

point the velocity vector is identical in magnitude and direction

for any given instant.

15. The continuity equation for an ideal fluid

flow state that energy is constant everywhere in the fluid.

16. Neglecting the forces due to inertia,

gravity and frictional resistance, the design of a channel can be

made by comparing Froude’s number.

17. For smooth turbulent flow the friction

factor changes as Nr1/4.

18. In order to avoid vaporization in the pipe

line, the pipe line over the ridge is laid in such a way that it

is not more than 6.4 m above the hydraulic gradient.

19. The continuity equation is applicable to

conservation of mass.

20. The rise or fall of head ‘h’ in a

capillary tube of diameter ‘d’ and liquid surface tension ‘ σ‘

and specific weight ‘w’ is given by 4σ/wd.

21. McLeod gauge used for low pressure

measurement operates on the principle of Boyle’s law.

22. Mass density of liquid (ρ ) is given by ρ

= kg sec2/m4.

23. Running away speed of a Pelton wheel gives

no load speed when governor mechanism fails.

24. A Kaplan turbine is low head axial flow

turbine.

25. Vector difference of two velocities is

relative velocity.

26. A ship whose hull length is 100 m is to

travel at 10 m/sec. For dynamic similarity, at 2 m/sec velocity a

1:25 model be towed through water.

27. For stable equilibrium of floating body

its metacentre should lie above the center of gravity.

28. Center of pressure on an inclined plane

lies below the centroid.

29. The line of action of the buoyant force

always acts through the centroid of the displaced volume of

the fluid.

30. An equipotential line is one that has no

velocity component tangent to it.

31. Hydraulic jump is used to reduce the

energy of flow.

32. The lowest portion to storage basin from

where the water is not drawn, is dead storage.

33. The pitot tube is a device used for

measurement of velocity.

34. Hydrometer is used to fine out specific

gravity of liquids.

35. Mach number is signification is case of

supersonics, as with projectiles and jet propulsion.

36. The fluid forces taken in to consideration

in the Navier Stokes equation are gravity, pressure and

viscosity.

37. Rocks having excessive internal stresses,

producing spalling, are called stratified rocks.

38. Permissible velocity of water flowing

through concrete tunnel, is generally 4-5 m/s.

39. The maximum continuous power available from a

hydro-electric plant under the most adverse hydraulic conditions

is called firm power.

40. The ratio of maximum load to the rated

plant capacity is called utilization factor.

41. Orifice refers to n opening in hydraulic

structure with regulation provision.

42. The value of coefficient of discharge in

comparison to coefficient of velocity is found to be less.

43. Weir refer to an opening having partially

full flow.

44. The pressure force, in Netwons, on the 15

cm dia head light of an automobile traveling at 25 m/s will be

6.8.

45. Power transmitted through a pipe is

maximum when the loss of head due to friction is one-third of the

total head supplied.