Q. Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.

View solution

Q. The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶ m²/s).

View solution

Q. For Laminar flow through a packed bed, the pressure drop is proportional to (Vₛ is the superficial liquid velocity and Dₚ is the particle diameter)

View solution

Q. The maximum delivery pressure of compressors can be upto __________ atmospheres.

View solution

Q. Dimension of surface tension is(where, F = force, L = length)

View solution

Q. Which of the following is not a dimension-less parameter ?

View solution

Q. The fluid property, due to which, mercury does not wet the glass is

View solution

Q. Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds

View solution

Q. When the momentum of one fluid is used for moving another fluid, such a device is called a/an

View solution

Q. The normal stress is the same in all directions at a point in a fluid, when the fluid is

View solution

Q. Head developed by a centrifugal pump depends on its

View solution

Q. Hydraulic mean depth (Dₘ) for a circular pipe of diameter 'D' flowing full is 0.25 D. For a circular channel, at Dₘ = 0.3 D, gives the condition for the maximum

View solution

Q. The head loss in turbulent flow in a pipe varies

View solution

Q. Most commonly used joint in the underground pipe lines is the

View solution

Q. Schedule number of a pipe, which is a measure of its wall thickness, is given by

View solution

Q. The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the

View solution

Q. For a particle settling in water at its terminal settling velocity, which of the following is true ?

View solution

Q. A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ₀ = 10 KPa, is shared between flat parallel plates separated by a distance of 10⁻³ m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is

View solution

Q. Pick out the correct statement.

View solution

Q. Shear stress in a fluid flowing in a round pipe

View solution