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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Q. Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the

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Q. In case of end to end connection of two or more pipes in series, the __________ each pipe.

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Q. Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?

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Q. The flow of gas along a pipe in the direction of decreasing pressure causes decrease in its

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Q. Centrifugal pump can't be used to pump

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