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Hydraulics and Fluid Mechanics

21.

Dimensions of surface tension are

Answer: A

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22.

The viscosity of water at 20°C is

Answer: D

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23.

The pressure measured with the help of a pressure gauge is called

Answer: B

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Answer: A

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25.

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

Answer: A

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Answer: C

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Answer: B

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28.

According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

Answer: D

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Answer: B

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30.

The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

Answer: D

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