2. An ideal fluid is frictionless and incompressible.
Correct : A. Correct
3. The vacuum pressure is always the negattive gauge pressure.
Correct : A. Yes
4. The Cippoletti weir is a
Correct : C. trapezoidal
5. The density of a liquid in kg / m3 is numerically equal to its specific gravity.
Correct : A. True
6. The specific gravity of water is taken as
Correct : D. 1
7. The frictional resistance of a pipe varies approximately with
Correct : C. square of velocity
8. The intensity of pressure at any point, in a liquid, is
Correct : B. directly proportional
9. A fluid which obeys the Newton's law of viscosity is termed as
Correct : C. newtonian fluid
10. A flow in which the quantity of liquid flowing per second is constant, is called
Correct : A. steady
11. The atmospheric pressure at sea level is
Correct : D. all of the above
12. Viscous force is the
Correct : C. product
13. For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called
Correct : B. Bernoulli's equation
14. The pressure of fluid due to hammer blow is
Correct : C. directly proportional to (density)1/2 of fluid
15. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.
Correct : B. Incorrect
16. The mercuty does not wet the glass. This is due to the property of the liquid known as
Correct : D. surface tension
17. In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as the of the atmosphere.
Correct : A. True
18. The value of coefficient of velocity for a sharp edged orifice
Correct : B. increases
19. The specific weight is also known as weight density.
Correct : A. Correct
20. In a footstep bearing, if the speed of the shaft is doubled, then the torque required to over-come the viscous resistance will be
Correct : A. double
21. To product of mass and accelaration of flowing liquid is called
Correct : A. inertia force
22. The maximum efficiency of transmission through a pipe is
Correct : C. 66.67%
23. Euler's number is the ratio of
Correct : A. inertia
24. To to of the weir over which the water flows in known as
Correct : A. sill or crest
25. A weir is usually made of masonry or concrete.
Correct : A. Yes
26. The pressure of a liquid measured with the help of a piezometer tube is
Correct : B. gauge pressure
27. The pressure of liquid at throat in a venturimeter is
Correct : B. lower
28. The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.
Correct : A. Yes
29. In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
Correct : D. sixteen times
30. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.
Correct : A. Yes
31. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be
Correct : B. directly proportional
32. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe.
Correct : A. Yes
33. The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
Correct : B. specific gravity of liquid
34. In an external mouthpiece, the absolute pressure head at vena contracta is
Correct : A. less than
35. The unit of kinematic viscosity in S. I. units is
Correct : C. m2/s
36. Re-entrant or Borda's mouthpiece is an
Correct : A. internal
37. The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is
Correct : B. one-third
38. The coefficient of venturiflume, generally lies between
Correct : D. 0.95 to 1.0
39. An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called.
Correct : B. notch
40. In a venturimeter, the velocity of liquid at throat is
Correct : A. higher
41. When a body is placed over a liquid, it will float if
Correct : B. gravitational force is less than the upthrust of the liquid
42. The hydraulic gradient line may be above or below the centre line of the pipe.
Correct : B. False
43. The property of a liquid which enables into resist tensile stress is called its surface tension.
Correct : A. Agree
44. 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.
Correct : B. False
45. The viscosity of a liquid
Correct : A. effects
46. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
Correct : B. 8.29 kN
47. A flow is called sonic, if the Mach number is unity.
Correct : A. Agree
48. An internal mouthpiece is said to be running free if the length of the mouthpiece is
Correct : C. less than three times
49. The hydraulic mean depth or the hydraulic radius is the ratio of
Correct : A. area of flow and wetted perimeter
50. When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure
Correct : A. less than
51. According to Pascal's law, the intensity of pressure at any point in a fluid at rest is the same in all directions.
Correct : A. Agree
52. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
Correct : D. submerged weir
53. A manometer is used to measure
Correct : C. high pressure
54. Stoke is the unit of
Correct : A. kinematic viscosity in C.G.S. units
55. Coefficient of resistance is the ratio of
Correct : C. loss of head in the orifice to the head of water available at the exit of the orifice
56. The discharge in an open channel corresponding to critical depth is
Correct : C. maximum
57. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced.
Correct : A. True
58. Bulk modulus of a fluid is the ratio of
Correct : C. increase in pressure to the volumetric strain
59. The tangential velocity of the water element having a free vortex is
Correct : B. inversely proportional to its distance from the centre
60. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
Correct : B. a paraboloid
61. The vlow in a pipe is neither laminar nor turbulent when Reynold number is
Correct : B. between 2000 and 2800
62. When the Mach number is more than 6, the flow is called
Correct : D. hyper-sonic flow
63. A flow in which
Correct : D. inertia
64. The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
Correct : C. The body B is more stable than body A
65. When a body is placed over a liquid, it is subjected to gravitational force and upthrust of the liquid.
Correct : A. True
66. The discharge of a depressed nappe is 6 to 7 percent
Correct : B. more than
67. The ratio of the inertia force to the gravity force is called Froud's number.
Correct : A. Agree
68. When the corfficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is
Correct : A. 1.84 (L-0.1 nH) H3/2
69. The specific weight of water in S.I. units is taken as
Correct : D. any of these
70. The vacuum pressure can be measured with the help of a piezometer tube.
Correct : B. False
71. A flow through a long pipe at decreasing rate is called
Correct : B. unsteady
72. A venturiflume is a flumed structure constructed across a channel by restricting its width.
Correct : A. True
73. The specific gravity of an oil whose specific weight is 7.85 kN / m3, is
Correct : A. 0.8
74. When a tube of smaller diameter is dipped in water, the water rises in the tube due to viscosity of water.
Correct : B. False
75. In case of flow through parallel pipes,
Correct : A. the head loss for all the pipes is same
76. The coefficient of discharge for an external mouthpiece depends upon
Correct : D. length of mouthpiece
77. The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.
Correct : A. Agree
78. When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free.
Correct : B. Wrong
79. A flow whose streamline is represented by a curve, is called
Correct : B. two-dimensional flow
80. The intensity of pressure on an immersed surface
Correct : B. increases
81. A channel is said to be of most economical cross-section, if
Correct : D. all of the above
82. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
Correct : A. Correct
83. The highest efficiency is obtained with a channel of
Correct : D. trapezoidal
84. Poise is the unit of viscosity in C.G.S. system of units.
Correct : A. Agree
85. The discharge through a convergent mouthpiece is
Correct : D. double
86. The viscosity of a liquid is due to cohesion of its particles.
Correct : A. Correct
87. When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward
Correct : A. concave
88. A manometer can be used to measure vacuum pressures.
Correct : A. Agree
89. The formula for discharge over a sharp-crested weir and Ogee weir is same as that of a rectangular weir.
Correct : A. Agree
90. A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called