Mechanical Properties of Materials
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the specific gravity of a substance defined as?

  • The concentration of particles in the substance
  • The force per unit area of the substance
  • The ratio of the density of the substance to the density of water at 4.0°C (correct)
  • The mass per unit volume of the substance

    • Which state change is associated with an endothermic process?

  • Condensation
  • Freezing
  • Melting (correct)
  • Deposition

    • What property does pressure represent?

  • Mass per unit volume
  • Concentration of particles
  • Force per unit area (correct)
  • Ratio of density to water at 4.0°C

    • Which principle explains why objects float or sink in a fluid?

    <p>Archimedes Principle</p> Signup and view all the answers

    How is density defined for a substance?

    <p>Mass per unit volume of the substance</p> Signup and view all the answers

    What quantity does the specific gravity of urine indicate?

    <p>Concentration of particles in urine</p> Signup and view all the answers

    In a fluid at rest, what is true about the pressure at any given depth?

    <p>It is the same in all directions at that depth</p> Signup and view all the answers

    How is fluid pressure related to the depth within the liquid?

    <p>It increases as the depth increases</p> Signup and view all the answers

    What happens to the weight of an object when it is wholly or partly immersed in a fluid?

    <p>It decreases</p> Signup and view all the answers

    If blood pressure is measured with the cuff around the calf of the leg (standing position), what would be expected compared to measuring on the arm?

    <p>The reading would be greater around the calf</p> Signup and view all the answers

    What is another term for the upward force exerted on an object immersed in a fluid?

    <p>Buoyant force</p> Signup and view all the answers

    Which property is responsible for an object's tendency to float in a fluid?

    <p>Buoyancy</p> Signup and view all the answers

    What factor affects buoyant force according to the text?

    <p>The density of the fluid</p> Signup and view all the answers

    According to the concept mentioned, what is needed for a fluid to exhibit laminar flow?

    <p>Low viscosity</p> Signup and view all the answers

    What does the statement 'The buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by that object' describe?

    <p>Archimedes' principle</p> Signup and view all the answers

    Which type of flow is characterized by erratic, small whirlpool-like circles called eddy currents?

    <p>Turbulent flow</p> Signup and view all the answers

    What is viscosity a measure of in fluids?

    <p>Frictional force between layers</p> Signup and view all the answers

    In fluid dynamics, what factors influence the flow of fluid as per the text?

    <p>Viscosity and pressure gradient</p> Signup and view all the answers

    What is the term used to describe the attractive forces between molecules that give rise to surface tension?

    <p>Cohesion</p> Signup and view all the answers

    What type of pump is designed to increase the pressure in a given vessel?

    <p>Force Pump</p> Signup and view all the answers

    Which term refers to the force per unit area causing deformation in a material?

    <p>Tensile Stress</p> Signup and view all the answers

    What is the measure of the amount of deformation in a material?

    <p>Strain</p> Signup and view all the answers

    Which type of strain results in the elongation of a solid body due to an applied tensile force?

    <p>Tensile Strain</p> Signup and view all the answers

    What is the term for the deformation in a solid due to compressive stress?

    <p>Compressive Deformation</p> Signup and view all the answers

    What is the region in the stress-strain curve that obeys Hooke’s Law?

    <p>Proportional limit</p> Signup and view all the answers

    At what point in the graph does the material return to its original position when the load acting on it is removed?

    <p>Elastic limit</p> Signup and view all the answers

    What occurs after the yield point is passed?

    <p>Permanent plastic deformation</p> Signup and view all the answers

    Which point represents the maximum stress that a material can endure before failure?

    <p>Ultimate stress point</p> Signup and view all the answers

    What does the Proportional limit state about the material?

    <p>The strain of the material is proportional to the applied stress within the elastic limit</p> Signup and view all the answers

    What does the term 'Fracture or breaking point' signify in a stress-strain curve?

    <p>&quot;Maximum force per unit area the material can withstand before it breaks or fractures&quot;</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser