Q. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

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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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

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Q. An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.

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Q. A compound pipe of diameter d1, d2 and d3 having lengths l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by

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Q. The velocity corresponding to Reynold number of 2800, is called

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Q. When the pipes are in series, the total head loss is equal to the sum of the head loss in each pipe.

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Q. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, at right angles to the direction of flow of the liquid is known as lift.

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Q. The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

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Q. The velocity at which the laminar flow stops, is known as

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Q. When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

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Q. The Newton's law of resistance is based on the assumption that the

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Q. The Euler's equation for the motion of liquids is based upon the assumption that

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Q. A weir is usually made of masonry or concrete.

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Q. The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)

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Q. A flow in which __________ force is dominating over the viscosity is called turbulent flow.

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Q. If an incompressible liquid is continuously flowing through a pipe, the quantity of liquid passing per second is different at different sections.

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Q. The atmospheric pressure at sea level is

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Q. When the pressure intensity at a point is less than the local atmospheric pressure, then the difference of these two pressures is called vacuum pressure.

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Q. Reynold's number is the ratio of inertia force to

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Q. The unit of dynamic viscosity in S.I. units is

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