Single suitable word(s) for following statements ::
1. The branch of applied mechanics dealing with the behaviour of fluids at rest and in motion.
2. When in equilibrium, fluids can't sustain ______ forces.
3. Ratio of the mass of a body to the mass of an equal volume of a substance taken as a standard.
4. The property which determines the amount of its resistance to a shearing force.
5. Kinematic coefficient of viscosity is the ratio of absolute viscosity and ______.
6. Viscosities of liquids _______ affected by pressure changes.
7. Kinematic viscosity of gases varies _________ as the pressure.
8. Surface molecules have _________ energy than interior molecules in a liquid.
9. The work to be done to bring enough molecules from inside the liquid to the surface to form one new unit area of that surface.
10. The liquids rise in tubes when adhesion of liquid to walls is_________cohesion of the liquid.
11. The ratio of the change in unit pressure to the corresponding volume change per unit of volume.
12. A fluid in which the shear stress is proportional to the velocity gradient or shearing strain.
13. A fluid for which the resistance to shearing deformation is zero.
14. Longitudinal stress in thin-walled cylinders closed at the ends is equal to_________the hoop tension.
15. The line of action of force exerted by a liquid on a plane area passes through the_________
16. The position of the centre of pressure is always_________the centre of gravity of the area.
17. The force acting on any weight floating or immersed in a liquid, then force being equal to the weight of the liquid displaced.
18. The point through which the buoyant force acts is called the centre of buoyancy and it is located at the _________of the displaced liquid.
19. For stability of a submerged body, the centre of gravity of body must lie directly _________the centre of buoyance of the displaced liquid.
20. If the ratio of all corresponding dimensions of model and prototype are equal.
21. If the paths of homologous moving particles are geometrically similar and if the ratios of the velocities of homologous particles are equal.
22. If the ratios of all homologous forces in geometrically and kinematically similar models and prototypes are the same.
23. Inertial pressure force ratio.
24. Inertia-viscous force ratio.
25. Inertia-gravity force ratio.
26. Inertia-elasticity force ratio.
27. Square root of Cauchy number.
28. Inertia-surface tension ratio.
29. An incompressible fluid flow in which the direction and magnitude of the velocity at all points are identical.
30. A fluid flow in which the fluid particles move in planes or parallel planes and the streamline patterns are identical in each plane.
31. An ideal flow which can be represented by a flow net (i.e. no shear stresses and no torques exist).
32. A flow, in which, at any point, the velocity of successive fluid particles is the same at successive periods of time.
33. A flow in which the magnitude and direction of the velocity do not change from point to point in the fluid.
34. Imaginary curves drawn through a fluid to indicate the direction of motion in various sections of the flow of the fluid system.
35. Equation of_________results from the principle of conservation of mass.
36. Energy at any section, plus energy added, minus the energy lost and extracted, is equal to energy at the end.
37. The hydraulic grade line lies below the energy line by an amount equal to the_________ at that section.
38. A flow in which the fluid particles move along straight, parallel paths in layers.
39. The _________ velocity of practical interest is the velocity below which all turbulence is damped out by the viscosity of the fluid.
40. The upper limit of laminar flow of practical interest is represented by a Reynold number of about _________ .
41. The ratio of the cross sectional area to the wetted perimeter for non-circular cross sections.
42. A flow in which the particles of the fluid move in a haphazard fashion in all directions.'I
43. Velocity distribution at a cross section of variation for laminar flow.
44. In laminar flow the maximum velocity at the centre of pipe is_________the average velocity.
45. Used to measure the velocity head of flowing fluid.
46. The ratio of area of jet (pitot tube) at vena contracta and the area of orifice.
47. The product of coefficient of velocity and coefficient of contraction.
48. The ratio of loss of kinetic energy in the orifice and the actual kinetic energy.
49. If Vi and V2 be velocity at inlet and outlet, then loss of head due to sudden enlargement is proportional to _________.
50. Loss of head due to sudden contraction is proportional to
51. Coefficient of discharge is unity in case of_________mouth piece.
52. Coefficient of contraction for an internal mouthpiece is_________
53. A sharp edged obstruction over which flow of a fluid takes place.
54. The sheet of water which flows over the notch or weir.
55. Flow over rectangular notch is proportional to_________
56. Flow over triangular notch is proportional to_________
57. A trapezoidal notch having side slops of one horizontal to four vertical.
58. The ratio of head lost due to friction and total length of pipe.
59. A pipe of uniform diameter which replaces the compound pipe consisting of several pipes of different diameters and lengths.
60. Transmission of power through pipe is maximum when loss of head due to friction in pipe is _________ of the total head supplied at the entrance to the pipe.
61. According to Froude, the frictional resistance in pipe is proportional to _________
62. Flow in a pipe will be turbulent when Reynold's number is greater than _________
63. A flow measuring device in which indication is essentially linear with flow rate.
64. A flow in which the velocity, i.e. depth of flow varies from one section to another.
65. In case of rectangular open channel, the width of channel should be _________ the depth for maximum discharge.
66. For maximum efficiency, the trapezoidal section of open channel should form a _________ .
67. For maximum discharge in circular shape open channel, depth should be equal to ______ x diameter of pipe.
68. The depth of flow for the given discharge in a channel, corresponding to minimum specific energy.
ANSWERS::
1. fluid mechanics
2. shear
3. relative density
4. viscosity
5. mass density
6. are not
7. inversely
8. more
9. surface tension
10. greater than
11. bulk modulus of elasticity
12. Newtonian fluid
13. ideal fluid
14. half
15. centre of pressure
16. below
17. buoyant force
18. centre of gravity
19. below
20. geometric similitude
21. Kinematic similitude
22. dynamic similitude
23. Euler number
24. Reynolds number
25. Froude number
26. Cauchy number
27. Mach number
28. Weber number
29. true one dimensional flow
30. two-dimensional flow
31. irrotational flow
32. steady flow
33. uniform flow
34. streamlines
35. continuity
36. Bernoulli's theorem
37. velocity head
38. laminar flow
39. critical
40. 2000
41. hydraulic radius
42. turbulent flow
43. parabolic law
44. twice
45. pitot tube
46. coefficient of contraction
47. coefficient of discharge
48. coefficient of resistance
49. [(V1-V2)2]
50. (V2)2
51. convergent divergent
52. 0.5
53. notch
54. nappe or vein
55. (H3/2)
56. (H5/2)
57. cippoletti notch
58. hydraulic gradient
59. equivalent pipe
60. one-third
61. (V2)
62. 4000
63. rotameter
64. non-uniform flow
65. twice
66. half hexagon
67. 0.95
68. critical depth
1. The branch of applied mechanics dealing with the behaviour of fluids at rest and in motion.
2. When in equilibrium, fluids can't sustain ______ forces.
3. Ratio of the mass of a body to the mass of an equal volume of a substance taken as a standard.
4. The property which determines the amount of its resistance to a shearing force.
5. Kinematic coefficient of viscosity is the ratio of absolute viscosity and ______.
6. Viscosities of liquids _______ affected by pressure changes.
7. Kinematic viscosity of gases varies _________ as the pressure.
8. Surface molecules have _________ energy than interior molecules in a liquid.
9. The work to be done to bring enough molecules from inside the liquid to the surface to form one new unit area of that surface.
10. The liquids rise in tubes when adhesion of liquid to walls is_________cohesion of the liquid.
11. The ratio of the change in unit pressure to the corresponding volume change per unit of volume.
12. A fluid in which the shear stress is proportional to the velocity gradient or shearing strain.
13. A fluid for which the resistance to shearing deformation is zero.
14. Longitudinal stress in thin-walled cylinders closed at the ends is equal to_________the hoop tension.
15. The line of action of force exerted by a liquid on a plane area passes through the_________
16. The position of the centre of pressure is always_________the centre of gravity of the area.
17. The force acting on any weight floating or immersed in a liquid, then force being equal to the weight of the liquid displaced.
18. The point through which the buoyant force acts is called the centre of buoyancy and it is located at the _________of the displaced liquid.
19. For stability of a submerged body, the centre of gravity of body must lie directly _________the centre of buoyance of the displaced liquid.
20. If the ratio of all corresponding dimensions of model and prototype are equal.
21. If the paths of homologous moving particles are geometrically similar and if the ratios of the velocities of homologous particles are equal.
22. If the ratios of all homologous forces in geometrically and kinematically similar models and prototypes are the same.
23. Inertial pressure force ratio.
24. Inertia-viscous force ratio.
25. Inertia-gravity force ratio.
26. Inertia-elasticity force ratio.
27. Square root of Cauchy number.
28. Inertia-surface tension ratio.
29. An incompressible fluid flow in which the direction and magnitude of the velocity at all points are identical.
30. A fluid flow in which the fluid particles move in planes or parallel planes and the streamline patterns are identical in each plane.
31. An ideal flow which can be represented by a flow net (i.e. no shear stresses and no torques exist).
32. A flow, in which, at any point, the velocity of successive fluid particles is the same at successive periods of time.
33. A flow in which the magnitude and direction of the velocity do not change from point to point in the fluid.
34. Imaginary curves drawn through a fluid to indicate the direction of motion in various sections of the flow of the fluid system.
35. Equation of_________results from the principle of conservation of mass.
36. Energy at any section, plus energy added, minus the energy lost and extracted, is equal to energy at the end.
37. The hydraulic grade line lies below the energy line by an amount equal to the_________ at that section.
38. A flow in which the fluid particles move along straight, parallel paths in layers.
39. The _________ velocity of practical interest is the velocity below which all turbulence is damped out by the viscosity of the fluid.
40. The upper limit of laminar flow of practical interest is represented by a Reynold number of about _________ .
41. The ratio of the cross sectional area to the wetted perimeter for non-circular cross sections.
42. A flow in which the particles of the fluid move in a haphazard fashion in all directions.'I
43. Velocity distribution at a cross section of variation for laminar flow.
44. In laminar flow the maximum velocity at the centre of pipe is_________the average velocity.
45. Used to measure the velocity head of flowing fluid.
46. The ratio of area of jet (pitot tube) at vena contracta and the area of orifice.
47. The product of coefficient of velocity and coefficient of contraction.
48. The ratio of loss of kinetic energy in the orifice and the actual kinetic energy.
49. If Vi and V2 be velocity at inlet and outlet, then loss of head due to sudden enlargement is proportional to _________.
50. Loss of head due to sudden contraction is proportional to
51. Coefficient of discharge is unity in case of_________mouth piece.
52. Coefficient of contraction for an internal mouthpiece is_________
53. A sharp edged obstruction over which flow of a fluid takes place.
54. The sheet of water which flows over the notch or weir.
55. Flow over rectangular notch is proportional to_________
56. Flow over triangular notch is proportional to_________
57. A trapezoidal notch having side slops of one horizontal to four vertical.
58. The ratio of head lost due to friction and total length of pipe.
59. A pipe of uniform diameter which replaces the compound pipe consisting of several pipes of different diameters and lengths.
60. Transmission of power through pipe is maximum when loss of head due to friction in pipe is _________ of the total head supplied at the entrance to the pipe.
61. According to Froude, the frictional resistance in pipe is proportional to _________
62. Flow in a pipe will be turbulent when Reynold's number is greater than _________
63. A flow measuring device in which indication is essentially linear with flow rate.
64. A flow in which the velocity, i.e. depth of flow varies from one section to another.
65. In case of rectangular open channel, the width of channel should be _________ the depth for maximum discharge.
66. For maximum efficiency, the trapezoidal section of open channel should form a _________ .
67. For maximum discharge in circular shape open channel, depth should be equal to ______ x diameter of pipe.
68. The depth of flow for the given discharge in a channel, corresponding to minimum specific energy.
ANSWERS::
1. fluid mechanics
2. shear
3. relative density
4. viscosity
5. mass density
6. are not
7. inversely
8. more
9. surface tension
10. greater than
11. bulk modulus of elasticity
12. Newtonian fluid
13. ideal fluid
14. half
15. centre of pressure
16. below
17. buoyant force
18. centre of gravity
19. below
20. geometric similitude
21. Kinematic similitude
22. dynamic similitude
23. Euler number
24. Reynolds number
25. Froude number
26. Cauchy number
27. Mach number
28. Weber number
29. true one dimensional flow
30. two-dimensional flow
31. irrotational flow
32. steady flow
33. uniform flow
34. streamlines
35. continuity
36. Bernoulli's theorem
37. velocity head
38. laminar flow
39. critical
40. 2000
41. hydraulic radius
42. turbulent flow
43. parabolic law
44. twice
45. pitot tube
46. coefficient of contraction
47. coefficient of discharge
48. coefficient of resistance
49. [(V1-V2)2]
50. (V2)2
51. convergent divergent
52. 0.5
53. notch
54. nappe or vein
55. (H3/2)
56. (H5/2)
57. cippoletti notch
58. hydraulic gradient
59. equivalent pipe
60. one-third
61. (V2)
62. 4000
63. rotameter
64. non-uniform flow
65. twice
66. half hexagon
67. 0.95
68. critical depth
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