Q. Re-entrant or Borda's mouthpiece is an __________ mouthpiece.

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Q. The flow in a pipe is neither laminar nor turbulent when Reynold number is

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Q. The intensity of pressure on an immersed surface __________ with the increase in depth.

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Q. When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

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Q. The total energy line lies over the centre line of the pipe by an amount equal to

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Q. A piezometer tube is used only for measuring

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Q. The flow in a pipe is turbulent when Reynold number is

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Q. When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

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Q. The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

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Q. The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.

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Q. The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

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Q. All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.

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Q. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of

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Q. When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

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Q. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.

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Q. Water is __________ liquid.

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Q. With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

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Q. In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

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Q. Viscous force is the __________ of shear stress due to viscosity and cross-sectionar area of flow.

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Q. The density of air is same at different heights.

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