Q. A bed consists of particles of density 2000 kg/m³. If the height of the bed is 1.5 metres and its porosity 0.6, the pressure drop required to fluidise the bed by air is

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Q. Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation ?

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Q. For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary

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Q. Capillary tube method of viscosity measurement is based on the

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Q. It is possible to integrate an automatic flow controller to a

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Q. If Blausius or Darcey friction factor is 'f₁' then the Fanning friction factor is equal to

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Q. Pick out the wrong statement pertaining to fluid flow.

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Q. A Newtonion liquid (ρ = density, μ = viscosity) is flowing with velocity v in a tube of diameter 'D'. Let Δp be the pressure drop across the length 'L'. For a laminar flow, Δp is proportional to

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Q. While starting a centrifugal pump, its delivery valve should be kept

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Q. For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to

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Q. In case of venturimeters, friction losses are about __________ percent of maximum velocity head.

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Q. With increase in the schedule number of a pipe of a particular nominal size, the

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Q. Turbine impeller

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Q. Friction produced by the formation of wakes is called the __________ friction.

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Q. For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is

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Q. For a reciprocating pump, the indicator diagram is the graph between the

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Q. The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the

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Q. High specific speed of a pump implies that, it is a/an __________ pump.

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Q. A gas (density = 1.5 kg/m³ , viscosity = 2x 10⁻⁵ kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m³and viscosity of 3 x 10⁻⁵ kg/m.s flowing at 3 m/s will be

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Q. Cocks are used to control

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