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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Q. The ratio of the inertia force to the gravity force is called Froude number.

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Q. Which of the following statement is wrong?

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Q. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

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Q. The viscosity of a liquid is due to cohesion of its particles.

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Q. A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

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Q. In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

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Q. The viscosity of water is __________ than that of mercury.

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Q. An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)

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