Q. Most economical section of a triangular channel, is

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Q. In an open tube, free surface of mercury remains

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Q. The value of momentum correction factor (β) for a laminar flow through a circular pipe, is

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Q. Manometers are used to measure

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Q. For exerting a pressure of 4.8 kg/cm², the depth of oil (specific gravity 0.8), should be

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Q. A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is √5 cm, the angular velocity of rotation, is

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Q. For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is

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Q. An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to

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Q. Discharge over an ogee weir remains the same as that of

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Q. When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as

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Q. The best side slope for most economical trapezoidal section, is

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Q. The following is not a laminar flow

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Q. Which one of the following statements is true ?

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Q. Equation of continuity of flow is based on the principle of conservation of

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Q. Pick up the correct statement from the following :

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Q. The flow in open channel is said to be subcritical if the Froude number is

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Q. In C.G.S. system the unit of visocity is

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Q. The ratio of the percentage error in the discharge and percentage error in the measurement of head, over rectangular notch, is

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Q. In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to

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Q. If the pressure at the inlet of a pipe is 90 kg/cm² and pressure drop over the pipe line is 10 kg/cm², the efficiency of transmission, is

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