HYDRAULICS PART 1 - 3

What is the maximum density of water?

• 0°C

• 4°C

• 25°C

• 100°C

Cohesion refers to the attraction between:

• Different molecules

• Like molecules

• Solid and liquid surfaces

• Gases in a fluid

Adhesion refers to the attraction between:

• Similar molecules

• Molecules of different substances

• Only gases

• Only solids

The tendency of a liquid’s surface to minimize its area is due to:

• Viscosity

• Surface tension

• Cohesion

• Buoyancy

Kinematic viscosity is defined as the ratio of:

• Absolute viscosity to density

• Density to surface tension

• Mass to volume

• Pressure to velocity

A manometer is used to measure:

• Fluid velocity

• Pipe diameter

• Pressure in pipes and channels

• Atmospheric pressure

A barometer is specifically used to measure:

• Fluid pressure in a pipe

• Atmospheric pressure

• Hydraulic gradient

• Liquid viscosity

The difference between total pressure and hydrostatic pressure is known as:

• Gauge pressure

• Absolute pressure

• Dynamic pressure

• Vapor pressure

Which instrument is used to measure the pressure difference between two points?

• Barometer

• Differential manometer

• Hydraulic press

• Venturimeter

Pascal’s Law states that:

• Pressure in a fluid acts equally in all directions

• The velocity of a fluid remains constant

• The pressure increases with depth

• The density of a fluid remains unchanged