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).

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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)

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

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

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

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

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

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

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

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Q. Head developed by a centrifugal pump depends on its

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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

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

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

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

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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

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

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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

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Q. Pick out the correct statement.

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

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Q. The resistance wire used in a hot wire anemometer for conducting electrical current is made of

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