Q. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

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Q. A nozzle is generally made of

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Q. The unit of surface tension is

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Q. The force of buoyancy is always __________ the weight of the liquid displaced by the body.

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Q. The coefficient of discharge is the ratio of dieoretical discharge to the actual discharge through an orifice.

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Q. The quantity of a liquid flowing per second through a section of a pipe or a channel is called discharge and is measured in cumecs (m³/s).

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Q. The purpose of a surge tank is

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Q. A fluid which obeys the Newton's law of viscosity is termed as

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Q. A notch is, usually, made of a metallic plate.

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Q. In an internal mouthpiece, if the jet after contraction expands and fills up the whole mouthpiece, then the mouthpiece is said to be running free.

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Q. A channel is said to be of most economical cross-section, if

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Q. The top of the weir over which the water flows is known as

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Q. A moving fluid mass may be brought to a static equilibrium position, by aplying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

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Q. The pressure at a stagnation point is always low.

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Q. When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free.

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Q. In two dimensional flow, the flow does not take place in a curve.

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Q. In order to avoid tendency of separation at throat in a venturimeter, the ratio of the diameter at throat to the diameter of pipe should be

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Q. The ratio of the inertia force to the __________ is called Euler's number.

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Q. When the flow in an open channel is gradually varied, the flow is said to be

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Q. When the Mach number is equal to unity, the flow is called sonic flow.

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