Question Bank: Mechanical Properties of Fluids

What is the primary characteristic that distinguishes fluids from solids?

What causes the pressure exerted by a fluid at rest?

Which statement best defines pressure in a fluid?

What is a common unit of pressure?

Why do gases have higher compressibility than liquids?

In what way do fluids behave under shear stress?

The density of a fluid is defined as what?

What happens to the pressure exerted by a fluid as depth increases?

Why does pressure in a fluid remain uniform in all directions?

What can be inferred about the behavior of a solid when shear stress is applied?

What characterizes the relative density of a substance?

When considering fluids, what is the significance of the term 'scalar quantity' in relation to pressure?

What happens to the volume of a liquid when an external pressure is applied?

Which of the following statements is true regarding the shearing stress in fluids?

How does the molecular arrangement in solids differ from that in fluids?

What characterizes a streamline in fluid flow?

In steady flow, how do the velocities of fluid particles behave?

What happens to the speed of a fluid as it passes through a narrower section of a pipe?

According to the principle of continuity, what relationship is established between area and velocity in a streamline flow?

Which of the following statements about streamlines is NOT correct?

When does the flow of fluid become turbulent?

Which of the following best describes the spacing of streamlines in a region where the flow speed is high?

In a steady, incompressible flow of a fluid, if the velocity at point A is 4 m/s and the cross-sectional area is halved at point B, what will be the velocity at point B?

What is a primary property of laminar flow?

Which of the following is a consequence of streamlines overlapping?

The flow of fluid in a large open tank is best characterized as:

What is the primary factor that causes fluid flow speed to increase when passing through a constricted area?

In a steady flow of an incompressible fluid, what remains constant along a streamline?

What is the pressure at a depth of 10 m in water, given the density of water is 1000 kg/m³?

Which of the following conditions indicates a critical point in fluid flow?

Which of the following statements about gauge pressure is true?

A submarine is at a depth where the water pressure is 5 atm. What is the actual pressure acting on the submarine?

If an object is submerged in a fluid, how does the pressure vary with depth?

What would be the gauge pressure at a depth of 50 m of water?

What is the unit of pressure in the SI system?

At what depth does the pressure reach 2 atm in water?

Which of the following factors does NOT affect fluid pressure at a given depth?

What is the pressure difference between the surface and 100 m depth in a liquid of density 800 kg/m³?

If the atmospheric pressure is 1.01 × 10^5 Pa, what is the absolute pressure at a depth of 10 m in a liquid of density 900 kg/m³?

Which of the following fluids will exert the highest pressure at the same depth?

What happens to the pressure in a static fluid when the temperature increases?

If the pressure at a certain depth in a fluid is described as 3 atm, what does it mean?

What physical quantity defines how much force is exerted per unit area in a fluid?

An object is floating in a liquid. How can we determine if it will sink or float?

What is viscosity?

Which fluid has the highest viscosity at room temperature?

If the temperature of a fluid is increased, what is the expected effect on its viscosity?

In which scenario would the viscosity of a fluid become important?

What does Stokes' law describe?

If a sphere of radius 'a' falls through a viscous fluid, how does its terminal velocity 'vt' relate to the viscosity 'η'?

Which of the following affects the viscosity of liquids?

In practical applications, why are fluids with low viscosity preferred?

Which factor does NOT affect the viscosity of a fluid?

What happens to layers of a fluid when shear stress is applied?

How do you calculate the viscous force (F) using Stokes' law?

What does Bernoulli's Principle state about fluid flow?

What does the term 'laminar flow' refer to in fluids?

If a fluid moves through a pipe that narrows, what happens to the fluid's velocity?

In which of the following applications is understanding viscosity crucial?

In Bernoulli's equation, what represents the kinetic energy per unit volume?

When two fluids of different viscosities are in contact, what generally happens at their interface?

If a fluid is flowing steadily in a horizontal pipe, which of the following statements is true according to Bernoulli’s equation?

What effect does an increase in fluid velocity have on pressure in a narrow section of a pipe according to Bernoulli's Principle?

Which of the following scenarios demonstrates the best application of Bernoulli's Principle?

When using Bernoulli's Principle to explain the functioning of a carburetor, what happens to the pressure as the fluid speeds up at the choke?

Why does Bernoulli's principle not apply at high speeds?

Which factor does Bernoulli's equation assume to be constant in an ideal fluid flow?

What is the role of pressure differences in Bernoulli’s Principle?

Identify the incorrect application of Bernoulli's Principle in real-world scenarios.

How does a Venturi meter measure fluid flow using Bernoulli’s Principle?

Which condition must be met for Bernoulli's Principle to hold true?

What is the property of liquids that causes them to form a convex or concave meniscus in a container?

Which of these liquids has a higher surface tension compared to the others?

How does temperature affect the surface tension of a liquid?

What is the excess pressure inside a soap bubble of radius r?

What happens to the capillary rise when the diameter of the capillary tube decreases?

Which characteristic is true of a liquid's surface tension?

What formula represents the relationship between pressure difference and surface tension in a lens-shaped drop of liquid?

When a liquid drop is formed, what type of shape does it usually take?

What is the angle of contact for a liquid that wets a surface?

How is the phenomenon of surface tension responsible for a small object, like a needle, floating on water despite being denser?

What happens to the shape of a liquid droplet as the temperature increases?

What is the surface tension of water at room temperature approximately?

What happens to the surface tension of water when detergents are added?

How can surface tension be measured using a simple experiment?

What type of surface is most likely to have a high contact angle with water?

How does the radius of curvature relate to pressure in a droplet of liquid?