Q. Pressure drop in a packed bed for laminar flow is given by the __________ equation.

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Q. The fluid velocity varies as the cube of the cylinderical pipe diameter in case of steady state laminar flow at constant pressure drop for __________ fluid.

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Q. Stoke's law is valid, when Nʀₑ, p is less than

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Q. __________ pumps are a group of vacuum pumps.

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Q. Plunger pumps are used for

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Q. What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate ?

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Q. In turbulent flow, the

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Q. Momentum correction factor used in fluid flow problems accounts for the

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Q. Viscosity of water is about __________ times that of air at room temperature.

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Q. Net positive suction head (NPSH) of a centrifugal pump must be

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Q. Actual lift of a pump is always less than the theoretical lift and is limited by the

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Q. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?

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Q. Nature of fluid flow during the opening of a valve in a pipeline is

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Q. The __________ pressure is measured by a static tube.

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Q. The speed of a sound wave in a gas is analogous to the speed of

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Q. Mercury is an ideal barometric fluid mainly due to its

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Q. A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation ?

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Q. A gas

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Q. For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is

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Q. Specific speed of a centrifugal pump relates it with another pump having the

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