Q. A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is

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Q. A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m³ ) is to be fluidised by water (density 1000 kg/m³ ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is

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Q. Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

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Q. Volume of liquid displaced by a floating body is equivalent to its

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Q. The __________ is measured by a piezometric opening.

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Q. What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?

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Q. Steady uniform flow is represented by flow through a/an

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Q. Pick out the correct statement pertaining to the flow through a converging-diverging tube.

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Q. Cavitation can be prevented by

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Q. Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will

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Q. Steady flow occurs, when the

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Q. With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost

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Q. Pick out the wrong statement:

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Q. Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.

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Q. In a fully turbulent flow (Re > 10⁵) in a pipe of diameter 'd', for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is

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Q. Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump.

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Q. Small pressure differences in liquids is measured using a/an

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Q. Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an

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Q. The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its

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Q. The exit cone angle in case of a standard venturimeter is __________ the entrance cone angle.

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