Fluid Dynamics VlI

What is static pressure?

• Pressure felt when fluid is at rest

• Pressure felt when fluid is in motion

• Pressure that is always zero

What is fluid resistance commonly referred to as?

• Lift

• Drag

• Weight

What is drag made up of?

• Friction forces and pressure forces

• Only friction forces

• Only pressure forces

According to Bernoulli's principle:

• Pressure increase when velocity decrease

• Pressure increase when velocity increase

• Pressure decrease when velocity decrease

How is the density of a fluid related to mass and volume?

• Density = Mass/Volume

• Density = Volume/Mass

• Density = Mass/Velocity

As temperature increases, what happens to the density of most solids and liquids?

• Density increases with increasing temperature

• Density decreases with increasing temperature

• Density is unchanged with increasing temperature

What is a ‘venturi tube’?

• A tube where the diameter is maximum at one end and decreases to a minimum at other end

• A tube where the diameter is minimum at one end and increases to a maximum at other end

• A tube where the diameter is minimum in the centre and maximum at the ends

What is dynamic pressure?

• Pressure resulting from fluid motion

• Pressure at rest

• Pressure in a vacuum

What does the total pressure represent?

• The sum of static and dynamic pressures

• Only static pressure

• Only dynamic pressure

A pitot tube primarily measures what pressure?

• Dynamic pressure

• Static pressure

• Total pressure