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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Q. Bulk modulus of a fluid __________ as the pressure increases.

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Q. The hydraulic gradient line may be above or below the centre line of the pipe.

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Q. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

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Q. The specific gravity has no units.

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Q. The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.

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