Hydraulics And Fluid Mechanics — Part 2 MCQs with Explanations

specific gravity is the correct answer to “Which of the following is demensionless”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

highly turbulent flow. is the correct answer to “A large Roynold number is indication of”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

6.4 m above the hydraulic gradient is the correct answer to “To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

viscosity is the correct answer to “The peoperty by virtue of which a liquid opposes relative motion between its different layers is called”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

discharge is the correct answer to “Ay between two stream lines represents”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

steady flow is the correct answer to “The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

always below the centroid of the area is the correct answer to “The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

zero at the pipe wall is the correct answer to “The Prartdtl mixing length is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

$${{\text{H}}^{\frac{5}{2}}}$$ is the correct answer to “The discharge through a V- notch varies as (where H is head)”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

newton-sec/metre2 is the correct answer to “The units of viscosity are”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

160 is the correct answer to “If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

metacentre is the correct answer to “When a body floating in a liquid, is displaced slightly, it oscillates about”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

when there is no motion of one fluid layer relative to an adjacent layer is the correct answer to “The normal stress is same in all directions at a point in a fluid”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

more is the correct answer to “The surface tension of mercury at normal temperature compared to that of water is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

all of the above is the correct answer to “The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

Boyle’s law is the correct answer to “Operation of McLeod gauge used for low pressure measurement is based on the principle of”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

9810 Pa is the correct answer to “The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

the direction and magnitude of the veiocity at all points are identical is the correct answer to “True one-dimensional flow occurs when”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

velocity, depth, pressure, etc. change from point to point in the fluid flow. is the correct answer to “Non uniform flow occurs when”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

$${\text{H}}$$ is the correct answer to “In a Sutro weir, the discharge is proportional to (where H is head)”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

specific gravity is the correct answer to “If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

surface tension is the correct answer to “Free surface of a liquid tends to contract to the smallest possible area due to force of”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

above the center of gravity. is the correct answer to “For a floating body to be in stable equilibrium, its metacentre should be”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

an airfoil is the correct answer to “In which of the following the friction drag is generally larger than pressure drag”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

remain same is the correct answer to “A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

shape is the correct answer to “Fluid is a substance which offers no resistance to change of”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

its vapour pressure is low is the correct answer to “Choose the wrong statement. Alcohol is used in manometer, because”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

it can provide longer column due to low density is the correct answer to “Alcohol is used in manometers because”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

make an angle in opposite direction to inclination of inclined plane is the correct answer to “An open vessel of water is accelerated up an inclined plane. The free water surface will”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

cm2/sec is the correct answer to “The unit of kinematic viscosity is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

$${\text{g}}$$ is the correct answer to “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”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

shear stress anctthejiate of angular distortion is the correct answer to “Newton’s law of viscosity is a relationship between”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

both (B) and (C) is the correct answer to “Mercury is often used in barometer because”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

center of pressure is the correct answer to “Resultant pressure of the liquid in the case of an immersed body acts through”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

the resultant force on a body due to the fluid surrounding it is the correct answer to “Buoyant force is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

1.00 is the correct answer to “Coefficient of contraction for an external cylindrical mouthpiece is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

surface tension is the correct answer to “Surface energy per unit area of a surface is numerically equal to”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

all of the above is the correct answer to “Specific weight of sea water is more that of pure water because it contains”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

$$\frac{1}{2}$$ is the correct answer to “The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.

4000 kg/cm2 is the correct answer to “A liquid compressed in cylinder has a volume of 0.04 m 3 at 50 kg/cm 2 and a volume of 0.039 m 3 at 150 kg/cm 2 . The bulk modulus of elasticity of liquid is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics.