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WorksheetsFluid Mechanics Quiz
Total questions: 15
Worksheet time: 42mins
Evelyn is trying to fill two containers: one with water and one with air. She notices that it's much harder to squeeze the container with water to make it smaller, but the container with air can be compressed easily. What is a key difference between liquids and gases that explains this?
Both are incompressible
Liquids have no fixed volume
Gases occupy a fixed volume
Liquids are difficult to compress
Noah is observing a balloon filled with air. He wonders why the gas molecules inside the balloon are so widely spaced compared to liquids and solids. What is the main reason for this?
High cohesive forces.
Low cohesive forces.
High density.
Low temperature.
Daniel is studying fluid mechanics and is curious about its application areas. Which of the following is NOT mentioned as an application area of fluid mechanics?
Breathing
Blood flow
Cooking
Swimming
Liam accidentally spills some honey on a table and then tries to push it with a spoon. How does the honey respond to the applied shear stress?
By resisting
By deforming continuously
By solidifying
By evaporating
Olivia is working in a laboratory and needs to determine the kinematic viscosity of a liquid sample. She knows that kinematic viscosity is the
ratio of absolute viscosity to the density of the liquid
ratio of specific gravity of the liquid to the absolute viscosity
product of absolute viscosity and density of the liquid
product of absolute viscosity and mass of the liquid
Charlotte is conducting an experiment with a thin glass tube and some water. She notices that the water rises inside the tube when she places it into the container. This will happen if...
the adhesion force between molecules of fluid and tube is less than the cohesion between liquid molecules
the adhesion force between molecules of fluid and tube is more than the cohesion between liquid molecules
the adhesion force between molecules of fluid and tube is equal to the cohesion between liquid molecules
None of the above
Fluids for which the shearing stress is not linearly realted to the rate of the shearing strain are designated as what?
Viscous fluids
Newtonian fluid
Non-Newtonian fluid
Ideal fluid
Harper is conducting an experiment in her science class. She places different liquids into a glass tube to observe how they interact with the surface. Which of the following is a good example of a non-wetting liquid when it is in contact with a glass tube?
Water
Saltwater
Mercury
Which of the following best describes a Bingham plastic fluid?
A fluid that has a constant viscosity regardless of the applied stress.
A fluid that flows only after a certain yield stress is exceeded and then behaves like a Newtonian fluid.
A fluid whose viscosity decreases with increasing shear rate.
A fluid that behaves like a solid until a critical temperature is reached.
Benjamin is studying the flow of water through a pipe in his engineering class. He wants to model the water as an ideal fluid to simplify his calculations. A fluid is said to be ideal, if it is
incompressible
viscous and incompressible
inviscous and compressible
inviscous and incompressible
In a laboratory experiment, a researcher is studying the flow of a viscous fluid between two plates. The lower plate is fixed, while the upper plate, with a surface area of 1.8x106mm2, is being pulled at a constant speed of 0.3m/s. The plates are separated by a distance of 0.15mm, and the fluid between them has a viscosity of 1.5 poise. Calculate the force and power required to maintain this speed. (10 points)
Michael is working at an oil refinery and finds that one litre of crude oil weighs 9.6N. Calculate its specific weight, density and specific gravity.
Note: 1000L = 1 m3
(10 points)
Anika is conducting an experiment using mineral oil, which has a surface tension of 0.03 N/m and a density of 850 kg/m³. She uses a vertical glass tube with a diameter of 3 mm. The oil rises slightly in the tube due to capillary action.
If the observed capillary rise is 0.5 mm, calculate the contact angle of mineral oil with the glass. Take g=9.81 m/s².(10 points)
At the beginning of a journey a truck tire has a volume of 30,000 cm3 and an internal pressure of 170 kPa. The temperature of the tire is 16∘C. By the end of the trip, the volume of the tire has increased to 32,000 cm3 and the temperature of the air inside the tire is 40∘C. What is the tire pressure at the end of the journey?
(10 points)
Ava is working in a laboratory and needs to determine the bulk modulus of elasticity of a fluid. She compresses the fluid in a cylinder from a volume of 0.009m3 at 70N/cm2 pressure to a volume of 0.0085m3 at 270 N/cm2 pressure. (10 points)
