MCQOPTIONS
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MCQOPTIONS
This section includes 342 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. |
The place, where the hydraulic jump takes place, a lot energy of the flowing liquid is dissipated. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 52. |
The measurement of velocity of flow. cross sectional area of river and discharge of water in the river is known as |
| A. | river mapping |
| B. | river measurement |
| C. | river gauging |
| D. | none of this |
| Answer» D. none of this | |
| 53. |
In a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant." This is statement of |
| A. | Pascal s law |
| B. | Continuity equation |
| C. | Bernoulli s equation |
| D. | Darcy s law |
| Answer» D. Darcy s law | |
| 54. |
When orifice discharge the liquid in to some other vessel containing the liquid, and the outlet is partially under liquid the orifice is called |
| A. | large orifice |
| B. | free discharge orifice |
| C. | fully submerged orifice |
| D. | partially submerged orifice |
| Answer» E. | |
| 55. |
When orifice discharge the liquid into some other vessel containing the liquid, and the outlet is completely submerged, the orifice is called |
| A. | large orifice |
| B. | free discharge orifice |
| C. | fully submerged orifice |
| D. | partially submerged orifice |
| Answer» D. partially submerged orifice | |
| 56. |
If the sum of pressure heads and velocity heads [(p/w) + (v2 /2g)] of a liquid flowing In a pipe be plotted as vertical ordinates on the centre line of the pipe. then the line joining the tops of such ordinates is known as |
| A. | Hydraulic Line |
| B. | Hydraulic Gradient Line |
| C. | Total Energy Line |
| D. | Energy Line |
| Answer» D. Energy Line | |
| 57. |
A pipe line is 6 km long and having 20 cm diameter connect two reservoir 'A' and 'B'. The rate of discharge in the pipe is 30 lit/sec. Find out the difference in reservoir levels if friction factor f = 0.0008. |
| A. | 4.5 mm |
| B. | 4.5 cm |
| C. | 4.5 m |
| D. | 4.5 |
| Answer» D. 4.5 | |
| 58. |
When pressure is measured with reference to atmospheric pressure, but it is below atmospheric pressure, it is known as |
| A. | Atmospheric pressure |
| B. | Absolute Pressure |
| C. | Gauge Pressure |
| D. | Vacuum Pressure |
| Answer» E. | |
| 59. |
Liquid is flowing through 200 mm diameter tube with mean velocity of 2 m/sec. If density ofliquid is 912 kg/m3and viscosity is0.38 N.S/m2find type of flow. |
| A. | Laminar flow |
| B. | Transition flow |
| C. | Turbulent flow |
| D. | None of the above |
| Answer» B. Transition flow | |
| 60. |
Type of flow in which the fluid characteristics like velocity, pressure, density etc. at a point change with time is known as |
| A. | steady flow |
| B. | unsteady flow |
| C. | uniform flow |
| D. | non-uniform flow |
| Answer» C. uniform flow | |
| 61. |
Type of flow in which fluid particles do not rotate about their own axes while flowing is known as |
| A. | compressible flow |
| B. | incompressible flow |
| C. | rotational flow |
| D. | ir-rotational flow |
| Answer» E. | |
| 62. |
The imaginary line, drawn in the fluid E in such a way that the tangent to any point gives the direction of motion (velocity) at the point is called |
| A. | stream line |
| B. | streak line |
| C. | potential line |
| D. | stream tube |
| Answer» B. streak line | |
| 63. |
The instantaneous pictures of the position of all fluid particles, which have passed through a given point at some previous time, are called |
| A. | stream line |
| B. | streak line |
| C. | potential line |
| D. | stream tube |
| Answer» C. potential line | |
| 64. |
The diameters of a pipe at the sections 1 and 2 are 10 cm and15 cm respectively. The velocity of water flowing through the pipe at section 1 is 5 m/s. Determine the velocity at section 2. |
| A. | 0.22 m/sec |
| B. | 0.45 m/sec |
| C. | 2.22 m/sec |
| D. | 4.40 m/sec |
| Answer» D. 4.40 m/sec | |
| 65. |
"The intensity of pressure at any point in a fluid at rest, is same in all directions". This is statement of |
| A. | Pascal s law |
| B. | Continuity equation |
| C. | Bernoulli s equation |
| D. | Darcy s law |
| Answer» B. Continuity equation | |
| 66. |
An opening provided in one side of a tank or a reservoir, with upstream liquid level below the top edge of the opening is called |
| A. | circle |
| B. | orifice |
| C. | notch |
| D. | weir |
| Answer» D. weir | |
| 67. |
Water is flowing through a rectangular notch, having base width 500 mm and head over it is 160 mm. Find discharge of notch if Cd = 0.6. |
| A. | 0.0567 m3/sec |
| B. | 56.70 m3/sec |
| C. | 0.0567 lit/sec |
| D. | 56.70 lit/sec |
| Answer» B. 56.70 m3/sec | |
| 68. |
Only one reading, i.e. head (H) is required to be taken for the measurement of discharge in a triangular notch. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 69. |
A water tank contains 1.5 m deep water. Find pressure exerted by water per metre length of the tank. |
| A. | 11.04 N/m |
| B. | 11.04 kN/m |
| C. | 11.04 kN/m2 |
| D. | 11.04 N/m2 |
| Answer» C. 11.04 kN/m2 | |
| 70. |
the velocity of approach is considered for the discharge over the weir then the additional height of must be considered. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» B. false | |
| 71. |
Determine the head over sill of a 90 V-notch when the discharge passing over it is 100 lit/sec. consider Cd 0.6. |
| A. | 0.346 cm |
| B. | 3.46 cm |
| C. | 0.346 m |
| D. | 3.46 m |
| Answer» D. 3.46 m | |
| 72. |
The velocity of liquid particles at the centre of pipe is less than the velocity of particles near the inner surface of pipe. |
| A. | true |
| B. | false |
| C. | all |
| D. | none |
| Answer» C. all | |
| 73. |
The force exerted by a statue fluid on a surface either plane or curved when the fluid comes in contact with the surface. |
| A. | total pressure |
| B. | center of pressure |
| C. | all |
| D. | none |
| Answer» C. all | |
| 74. |
____________ is defined as the ratio of the weight density (or density) a fluid to the weight density (or density) of a standard fluid. |
| A. | Density |
| B. | Specific weight |
| C. | Specific gravity |
| D. | Surface tension |
| Answer» D. Surface tension | |
| 75. |
____________ is defined as a phenomenon of rise or fall of a liquid in a small tube, when the tube is held vertically in the liquid. |
| A. | Capillarity |
| B. | Viscosity |
| C. | Compressibility |
| D. | Vapor pressure |
| Answer» B. Viscosity | |
| 76. |
______ is defined as the property of a fluid which offers resistance to movement of one layer of fluid over another adjacent layer of the fluid. |
| A. | Capillarity |
| B. | Viscosity |
| C. | Compressibility |
| D. | Vapor pressure |
| Answer» C. Compressibility | |
| 77. |
___________ is defined as the pressure at which the liquid will transform into vapour at the given temperature. |
| A. | Capillarity |
| B. | Viscosity |
| C. | Compressibility |
| D. | Vapor pressure |
| Answer» E. | |
| 78. |
Specific energy of a flowing fluid per unit weight is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 79. |
If E1 and E2 are the specific energies at the start of back water curve and at the maximum rise of water respectively and ib and ie are the head slope and the energy line slope respectively, the length of back water (L) is given by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | None of these. |
| Answer» C. [C]. | |
| 80. |
The minimum specific energy of flow of water in open channel is : (where hc is the critical depth) |
| A. | hc |
| B. | [B]. |
| C. | [C]. |
| D. | hc |
| Answer» D. hc | |
| 81. |
Which one of the following equation is applicable to unsteady flow in open channels : |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 82. |
For maximum power transmission through a nozzle, (where hf is the head lost due to friction) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 83. |
If D is the diameter of a pipe of length L and f is the coefficient of friction of pipe then diameter of the nozzle d is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | none of these. |
| Answer» B. [B]. | |
| 84. |
The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second required to close the valve, the head of pressure |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | none of these. |
| Answer» B. [B]. | |
| 85. |
The valve closure is said to be sudden if |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 86. |
If total head available at the inlet of pipe and f1 is the loss of head due to friction in the pipe, the maximum efficiency of transmission of power (ηmax) is |
| A. | 1/2 |
| B. | 2/3 |
| C. | 3/4 |
| D. | 4/5 |
| Answer» C. 3/4 | |
| 87. |
If Re is the Renold's number, the coefficient of friction for laminar flow is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 88. |
The ratio of time for completely emptying the hemispherical tank and circular horizontal tank of equal radii both fitted with similar orifices at their bottoms is : |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 89. |
Product of Renold number, Froud's number and Mach number is : |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 90. |
The momentum correction factor (β) for the viscous flow through a circular pipe is |
| A. | 1.25 |
| B. | 1.33 |
| C. | 1.5 |
| D. | 1.66 |
| E. | 2 |
| Answer» C. 1.5 | |
| 91. |
The pressure variation along the radial direction for vortex flow along a horizontal plane is related by |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 92. |
Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble) |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 93. |
Dimensions of the dynamic viscosity (μ) are |
| A. | MLT-2 |
| B. | M-1L-1T-1 |
| C. | ML-1T-2 |
| D. | ML-1T-1. |
| Answer» E. | |
| 94. |
The terminal velocity (v) of a sphere of radius r and specific weight W, which travels vertically downwards in a liquid of viscosity μ and specific weight W, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» C. [C]. | |
| 95. |
When two layers of a fluid separated by dy move over the other with a difference of velocity dv, causes a shearing stress , where μ is known as |
| A. | coefficient of viscosity |
| B. | absolute viscosity |
| C. | dynamic viscosity |
| D. | viscosity |
| E. | all the above. |
| Answer» F. | |
| 96. |
A load w is rolled a distance d across the deck of a ship of weight W, due to which the ship heels through θ°. The metacentric height of the ship, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» D. [D]. | |
| 97. |
The moment of inertia of a floating body along its longitudinal axis and the volume of water displaced by it are I and V respectively. The height of the metacentre above centre of buoyancy of the body, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| E. | [E]. |
| Answer» D. [D]. | |
| 98. |
If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |
| 99. |
If L, D and f are the length, diameter and coefficient of friction of a pipe, the ratio of the areas of the pipe A and nozzle a, to transmit maximum power, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» E. | |
| 100. |
Critical depth (h) of a channel, is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |