# Mechanical Engineering - Hydraulics and Fluid Mechanics

### Exercise :: Hydraulics and Fluid Mechanics - Section 5

31.

Falling drops of water become spheres due to the property of

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

Explanation:

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32.

The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.

 A. Agree B. Disagree

Explanation:

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33.

Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

 A. lift B. drag C. stagnation pressure D. bulk modulus

Explanation:

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34.

The height of a water column equivalent to a pressure of 0.15 MPa is

 A. 15.3 m B. 25.3 m C. 35.3 m D. 45.3 m

Explanation:

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35.

The total energy of a liquid particle in motion is equal to

 A. pressure energy + kinetic energy + potential energy B. pressure energy - (kinetic energy + potential energy) C. potential energy - (pressure energy + kinetic energy D. kinetic energy - (pressure energy + potential energy)