# Mechanical Engineering - Hydraulics and Fluid Mechanics

### Exercise :: Hydraulics and Fluid Mechanics - Section 6

41.

When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure

 A. varies as the square of the radial distance B. increases linearly as its radial distance C. increases as the square of the radial distance D. decreases as the square of the radial distance

Explanation:

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42.

The specific weight of compressible fluids does not remain constant.

 A. True B. False

Explanation:

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43.

The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

 A. surface tension B. compressibility C. capillarity D. viscosity

Explanation:

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44.

In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.

 A. True B. False

Explanation:

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45.

Newton's law of viscosity is a relationship between

 A. pressure, velocity and temperature B. shear stress and rate of shear strain C. shear stress and velocity D. rate of shear strain and temperature