Q. Poise is the unit of viscosity in C.G.S. system of units.

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Q. The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

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Q. When the Mach number is more than 6, the flow is called

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Q. The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

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Q. Kinematic viscosity is the product of dynamic viscosity and the density of the liquid.

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Q. A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

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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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