MCQOPTIONS
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MCQOPTIONS
This section includes 270 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
*/*_To avoid an interruption in the flow of a syphon, an air vessel is provided? |
| A. | at the inlet |
| B. | at the outlet |
| C. | at the summit |
| D. | ay nay point between inlet and outlet |
| Answer» D. ay nay point between inlet and outlet | |
| 52. |
*/*_The eddy viscosity for turbulent flow is? |
| A. | a function of temperature only |
| B. | a physical property of the fluid. |
| C. | dependent on the flow |
| D. | independent of the flow |
| Answer» D. independent of the flow | |
| 53. |
*/*_Least possible value of correction factor fori) kinetic energy is zeroii) kinetic energy is 1iii) momentum is zeroiv) momentum is 1The correct statements are? |
| A. | (i) and (iii) |
| B. | (ii) and (iii) |
| C. | (i) and (iv) |
| D. | (ii) and (iv) |
| Answer» E. | |
| 54. |
*/*_The time oscillation of a floating body with increase in metacentric height will be? |
| A. | same |
| B. | higher |
| C. | lower |
| D. | lower/higher depending on weight of body |
| Answer» D. lower/higher depending on weight of body | |
| 55. |
*/*_The line of action of the buoyant force acts through the? |
| A. | centroid of the volume of fluid vertically above the body |
| B. | center of the volume of floating body |
| C. | center of gravity of any submerged body |
| D. | centriod of the displaced volume of fluid |
| Answer» E. | |
| 56. |
*/*_The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is? |
| A. | laminar flow |
| B. | transition flow |
| C. | turbulent flow |
| D. | not predictable from the given data |
| Answer» B. transition flow | |
| 57. |
*/*_A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is? |
| A. | 400 kg/cm² |
| B. | 4000 kg/cm² |
| C. | 40 x 105 kg/cm² |
| D. | 40 x 106 kg/cm² |
| Answer» C. 40 x 105 kg/cm¬¨‚⧠| |
| 58. |
*/*_Buoyant force is? |
| A. | resultant force acting on a floating body |
| B. | equal to the volume of liquid displaced |
| C. | force necessary to keep a body in equilibrium |
| D. | the resultant force on a body due to the fluid surrounding it |
| Answer» E. | |
| 59. |
*/*_The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is? |
| A. | constant over the cross section |
| B. | parabolic distribution across the section |
| C. | zero at the mid plane and varies linearly with distance from mid plane |
| D. | zero at plates and increases linearly to midpoint |
| Answer» D. zero at plates and increases linearly to midpoint | |
| 60. |
*/*_An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to? |
| A. | g/3 |
| B. | g/2 |
| C. | 2g/3 |
| D. | g |
| Answer» E. | |
| 61. |
*/*_Choose the wrong statement.Alcohol is used in manometer, because? |
| A. | its vapour pressure is low |
| B. | it provides suitable meniscus for the inclined tube |
| C. | its density is less |
| D. | it provides longer length for a given pressure difference |
| Answer» B. it provides suitable meniscus for the inclined tube | |
| 62. |
*/*_Flow of water in a pipe about 3 meters in diameter can be measured by? |
| A. | orifice plate |
| B. | venturi |
| C. | rotameter |
| D. | pitot tube |
| Answer» E. | |
| 63. |
*/*_When a body floating in a liquid, is displaced slightly, it oscillates about? |
| A. | e.g. of body |
| B. | center of pressure |
| C. | center of buoyancy |
| D. | metacentre |
| Answer» E. | |
| 64. |
*/*_The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is? |
| A. | at the centroid of the submerged area |
| B. | always above the centroid of the area |
| C. | always below the centroid of the area |
| D. | none of the above |
| Answer» D. none of the above | |
| 65. |
*/*_A large Roynold number is indication of? |
| A. | smooth and streamline flow |
| B. | laminar flow |
| C. | turbulent flow |
| D. | highly turbulent flow. |
| Answer» E. | |
| 66. |
*/*_The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is? |
| A. | 1/3 |
| B. | 1/4 |
| C. | 1/2 |
| D. | 2/3 |
| Answer» B. 1/4 | |
| 67. |
*/*_Free surface of a liquid tends to contract to the smallest possible area due to force of? |
| A. | surface tension |
| B. | viscosity |
| C. | friction |
| D. | cohesion |
| Answer» B. viscosity | |
| 68. |
*/*_The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to? |
| A. | 1 Pa |
| B. | 91 Pa |
| C. | 981 Pa |
| D. | 9810 Pa |
| Answer» E. | |
| 69. |
*/*_Mercury does not wet glass. This is due to property of liquid known as? |
| A. | adhesion |
| B. | cohesion |
| C. | surface tension |
| D. | viscosity |
| Answer» D. viscosity | |
| 70. |
*/*_Which of the following manometer has highest sensitivity? |
| A. | U-tube with water |
| B. | inclined U-tube |
| C. | U-tube with mercury |
| D. | micro-manometer with water |
| Answer» E. | |
| 71. |
*/*_The upper surface of a weir over which water flows is known is? |
| A. | crest |
| B. | nappe |
| C. | sill |
| D. | weir top |
| Answer» D. weir top | |
| 72. |
*/*_Metacentric height is the distance between the metacentre and? |
| A. | water surface |
| B. | center of pressure |
| C. | center of gravity |
| D. | center of buoyancy |
| Answer» D. center of buoyancy | |
| 73. |
*/*_If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be? |
| A. | h |
| B. | wh |
| C. | w/h |
| D. | h/w |
| Answer» C. w/h | |
| 74. |
%_In a static fluid_% |
| A. | resistance to shear stress is small |
| B. | fluid pressure is zero |
| C. | linear deformation is small |
| D. | only normal stresses can exist |
| Answer» E. | |
| 75. |
%_A pressure of 25 m of head of water is equal to_% |
| A. | 25 kN/m2 |
| B. | 245 kN/m2 |
| C. | 2500 kN/m2 |
| D. | 2.5 kN/m2 |
| Answer» C. 2500 kN/m2 | |
| 76. |
%_A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc_% |
| A. | 10 kg |
| B. | 100 kg |
| C. | 1000 kg |
| D. | 1 kg |
| Answer» B. 100 kg | |
| 77. |
%_Coefficient of velocity of venturimeter_% |
| A. | is independent of Reynolds number |
| B. | decreases with higher Reynolds number |
| C. | is equal to the coefficient of discharge of venturimeter |
| D. | none of the above |
| Answer» D. none of the above | |
| 78. |
_ In a forced vortex, the velocity of flow everywhere within the fluid is$? |
| A. | maximum |
| B. | minimum |
| C. | zero |
| D. | non-zero finite |
| Answer» E. | |
| 79. |
_ If no resistance is encountered by displacement, such a substance is known as$? |
| A. | fluid |
| B. | water |
| C. | perfect solid |
| D. | ideal fluid |
| Answer» E. | |
| 80. |
_ Density of water is maximum at$? |
| A. | 0°C |
| B. | 0°K |
| C. | 4°C |
| D. | 100°C |
| Answer» D. 100¬¨‚àûC | |
| 81. |
_ The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will$? |
| A. | increase |
| B. | remain unaffected |
| C. | may increase or decrease depending on the characteristics of liquid |
| D. | decrease |
| Answer» E. | |
| 82. |
_ The normal stress in a fluid will be constant in all directions at a point only if$? |
| A. | it is incompressible |
| B. | it has uniform viscosity |
| C. | it is frictionless |
| D. | it is at rest |
| Answer» E. | |
| 83. |
_ Gradually varied flow is$? |
| A. | steady uniform |
| B. | non-steady non-uniform |
| C. | non-steady uniform |
| D. | steady non-uniform |
| Answer» E. | |
| 84. |
_ When the flow parameters at any given instant remain same at every point, then flow is said to be$? |
| A. | quasi static |
| B. | steady state |
| C. | laminar |
| D. | uniform |
| Answer» E. | |
| 85. |
_ The hydraulic grade line is$? |
| A. | always above the centre line of pipe |
| B. | never above the energy grade line |
| C. | always sloping downward in the direction of flow |
| D. | all of the above |
| Answer» C. always sloping downward in the direction of flow | |
| 86. |
_ If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is$? |
| A. | 4/3 |
| B. | 3/2 |
| C. | 9/4 |
| D. | 27/8 |
| Answer» D. 27/8 | |
| 87. |
_ The viscosity of a gas$? |
| A. | decreases with increase in temperature |
| B. | increases with increase in temperature |
| C. | is independent of temperature |
| D. | is independent of pressure for very high pressure intensities |
| Answer» C. is independent of temperature | |
| 88. |
_ Kinematic viscosity is dependent upon$? |
| A. | pressure |
| B. | distance |
| C. | flow |
| D. | density |
| Answer» E. | |
| 89. |
_ Which of the following velocity potentials satisfies continuity equation ?$? |
| A. | x2y |
| B. | x2-y2 |
| C. | cosx |
| D. | x2 + y2 |
| Answer» C. cosx | |
| 90. |
_ In a static fluid$? |
| A. | resistance to shear stress is small |
| B. | fluid pressure is zero |
| C. | linear deformation is small |
| D. | only normal stresses can exist |
| Answer» E. | |
| 91. |
_ The tendency of a liquid surface to contract is due to the following property$? |
| A. | cohesion |
| B. | adhesion |
| C. | viscosity |
| D. | surface tension |
| Answer» E. | |
| 92. |
_ A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, theni) the ball will move to the frontii) the bubble will move to the frontiii) the ball will move to the reariv) the bubble will move to the rear Find out which of the above statements are correct ?$? |
| A. | (i) and (ii) |
| B. | (i) and (iv) |
| C. | (ii) and (iii) |
| D. | (iii) and (iv) |
| Answer» C. (ii) and (iii) | |
| 93. |
_ Ratio of inertia force to surface Jension is known as$? |
| A. | Mach number |
| B. | Froude number |
| C. | Reynold’s number |
| D. | Weber’s number |
| Answer» E. | |
| 94. |
_ The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to$? |
| A. | Buoyancy |
| B. | Equilibrium of a floating body |
| C. | Archimedes’ principle |
| D. | Bernoulli’s theorem |
| Answer» D. Bernoulli‚Äö√Ñ√¥s theorem | |
| 95. |
_ Liquids transmit pressure equally in all the directions. This is according to$? |
| A. | Boyle’s law |
| B. | Archimedes principle |
| C. | Pascal’s law |
| D. | Newton’s formula |
| Answer» D. Newton‚Äö√Ñ√¥s formula | |
| 96. |
_ The pitot tube is used to measure$? |
| A. | velocity at stagnation point |
| B. | stagnation pressure |
| C. | static pressure |
| D. | dynamic pressure |
| Answer» C. static pressure | |
| 97. |
_ A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is$? |
| A. | 0.83 |
| B. | 0.6 |
| C. | 0.4 |
| D. | 0.3 |
| Answer» C. 0.4 | |
| 98. |
_ Dimensions of surface tension are$? |
| A. | MlL°T2 |
| B. | MlL°Tx |
| C. | MlL r2 |
| D. | MlL2T2 |
| Answer» B. MlL¬¨‚àûTx | |
| 99. |
_ The maximum thickness of boundary layer in a pipe of radius r is$? |
| A. | 0 |
| B. | r/2 |
| C. | r |
| D. | 2r |
| Answer» D. 2r | |
| 100. |
_ When the velocity distribution is uniform over the cross-section, the correction factor for momentum is$? |
| A. | 0 |
| B. | 1 |
| C. | 4/3 |
| D. | 2 |
| Answer» C. 4/3 | |