Q. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow.

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Q. An average value of coefficient of velocity is

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Q. When a tube of smaller diameter is dipped in water, the water rises in the tube with an upward __________ surface.

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Q. An orifice is said to be large, if

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

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Q. The density of a liquid in kg/m³ is numerically equal to its specific gravity.

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Q. The critical depth meter is used to measure

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Q. The velocity of flow is same at all points in the cross-section of a channel.

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Q. The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

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Q. Select the wrong statement

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Q. The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

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

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Q. A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

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