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Poiseuille is law

Quiz by nora nader

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10 questions
Show answers
  • Q1
    What does Poiseuille's law describe?
    The pressure in a gas at constant volume
    The resistance of a solid material to deformation
    The relationship between temperature and thermal conductivity
    The flow rate of a viscous fluid through a pipe
    30s
  • Q2
    According to Poiseuille's law, which factor has the most significant impact on the flow rate of a fluid through a pipe?
    The surface roughness of the pipe
    The density of the fluid
    The length of the pipe
    The radius of the pipe
    30s
  • Q3
    In Poiseuille's law, which variable represents the viscosity of the fluid?
    r
    Q
    l
    \eta
    30s
  • Q4
    Poiseuille's law can be applied under which of the following conditions?
    Flow of a non-Newtonian fluid in a cylindrical pipe
    Laminar flow of an incompressible, Newtonian fluid in a cylindrical pipe
    Turbulent flow of a compressible fluid in a rectangular duct
    Laminar flow of an incompressible fluid in a pipe with varying diameter
    30s
  • Q5
    What is the formula for flow rate according to Poiseuille's law?
    Q = \frac{2 \pi r (P_1 + P_2)}{\eta l}
    Q = \frac{P V}{R}
    Q = \frac{A v}{t}
    Q = \frac{\pi r^4 (P_1 - P_2)}{8 \eta l}
    30s
  • Q6
    What units are typically used for viscosity in the context of Poiseuille's law?
    Pascal-seconds (Pa·s)
    Gram per centimeter-second (g/cm·s)
    Pascals (Pa)
    Cubic meters per second (m³/s)
    30s
  • Q7
    According to Poiseuille's law, how does the flow rate change if the length of the pipe is doubled, assuming all other factors remain constant?
    The flow rate doubles
    The flow rate is halved
    The flow rate remains the same
    The flow rate is quartered
    30s
  • Q8
    Which physical principle or law is Poiseuille's law derived from?
    The Navier-Stokes equations
    Newton's law of universal gravitation
    Archimedes' principle
    Bernoulli's equation
    30s
  • Q9
    In Poiseuille's law, which factor causes an exponential change in the flow rate of a fluid through a pipe?
    The viscosity of the fluid
    The radius of the pipe
    The length of the pipe
    The pressure difference along the pipe
    30s
  • Q10
    How does the pressure difference between two ends of a pipe affect the flow rate according to Poiseuille's law?
    The flow rate is inversely proportional to pressure difference
    The flow rate decreases exponentially with pressure difference
    The flow rate increases linearly with pressure difference
    The flow rate remains constant regardless of pressure difference
    30s

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