Q. In the low Reynolds number region, the drag force on a sphere is proportional to

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Q. The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

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Q. Laminar flow is characterised by the nonexistence of

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Q. The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

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Q. Select the correct practical example of steady non-uniform flow.

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Q. Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.

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Q. Boundary layer thickness in laminar flow over a flat plate increases as (where, d = distance from the leading edge.)

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Q. Gradually varied flow in open channel is a/an __________ flow.

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Q. The line of action of the buoyant force acts through the

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Q. Cavitation in a centrifugal pump can be avoided by keeping the

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Q. Vane anemometer

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Q. Terminal velocity is

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Q. Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f₁ and that for smooth pipe is f₂. Pick out the correct statement.

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Q. For an incompressible fluid, the bulk modulus of elasticity is

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Q. A fluid is a substance, that

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Q. The pressure intensity is the same in all directions at a point in a fluid

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Q. Quicksand is an example of a __________ fluid.

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Q. Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.

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Q. Differential manometer measures the

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Q. The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.

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