Q. A streamline is

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Q. Which of the following relationship is valid for the equilibrium position of the float in a rotameter ? (where, Df = Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)

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Q. Drag is defined as the force exerted by the

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Q. The boundary layer is that part of a moving fluid, in which the fluid velocity is

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Q. The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is

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Q. A relief valve

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Q. An isentropic process is the one, in which

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Q. The distribution of shear stress in a stream of fluid in a circular tube is

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Q. A fluid is the one, which

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Q. One horsepower is equal to

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Q. A fluid (μ/ρ = 0.01 cm²/sec) is moving at critical flow condition (Nʀₑ = 2100) through a pipe of dia 3 cms. Velocity of flow is __________ cm/sec.

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Q. Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

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Q. The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

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Q. Fluid flow in a/an __________ is an example of pressure flow.

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Q. In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, 'δ' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).

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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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