Q. The velocity at which the flow changes from laminar flow to turbulent flow is called

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Q. The discharge through a channel of trapezoidal section is maximum when

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Q. The vacuum pressure is always the negative gauge pressure.

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Q. The value of coefficient of discharge is __________ the value of coefficient of velocity.

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Q. When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

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Q. The pressure of a liquid measured with the help of a piezometer tube is

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Q. The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

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Q. The flow in a pipe or channel is said to be non-uniform when

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Q. The ratio of the inertia force to the viscous force is called

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Q. A flow whose streamline is represented by a straight line, is called __________ dimensional flow.

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Q. The absolute pressure is equal to

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

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Q. The hammer blow in pipes occurs when

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Q. When a body is placed over a liquid, it will sink down if

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Q. When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

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Q. A manometer is used to measure

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Q. The product of mass and accelaration of flowing liquid is called

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Q. The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)

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Q. If the value of coefficient of discharge increases, the discharge through the orifice decreases.

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Q. A point, in a compressible flow where the velocity of fluid is zero, is called

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