Fluid Dynamics

Description: Fluid Dynamics Quiz: Test Your Understanding of Fluid Behavior
Number of Questions: 15
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Tags: fluid dynamics fluid mechanics physics
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Which quantity represents the resistance of a fluid to flow?

  1. Viscosity

  2. Density

  3. Pressure

  4. Temperature


Correct Option: A
Explanation:

Viscosity is the property of a fluid that opposes the relative motion between its adjacent layers, causing internal friction.

The pressure exerted by a fluid at a given point is known as:

  1. Gauge Pressure

  2. Absolute Pressure

  3. Atmospheric Pressure

  4. Hydrostatic Pressure


Correct Option: B
Explanation:

Absolute pressure is the sum of gauge pressure and atmospheric pressure.

The principle that describes the relationship between pressure, volume, and temperature of a gas is:

  1. Pascal's Law

  2. Bernoulli's Principle

  3. Boyle's Law

  4. Archimedes' Principle


Correct Option: C
Explanation:

Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Which force causes objects to float or sink in a fluid?

  1. Gravitational Force

  2. Buoyant Force

  3. Drag Force

  4. Lift Force


Correct Option: B
Explanation:

Buoyant force is the upward force exerted by a fluid on an object immersed in it, counteracting the force of gravity.

The rate of flow of a fluid through a pipe is determined by:

  1. Volumetric Flow Rate

  2. Mass Flow Rate

  3. Reynolds Number

  4. Froude Number


Correct Option: A
Explanation:

Volumetric flow rate is the volume of fluid passing through a given cross-sectional area per unit time.

The dimensionless number that characterizes the flow regime of a fluid is:

  1. Reynolds Number

  2. Mach Number

  3. Prandtl Number

  4. Nusselt Number


Correct Option: A
Explanation:

Reynolds Number is used to determine whether the flow is laminar, transitional, or turbulent.

The phenomenon where a fluid exerts a force on an object moving through it is known as:

  1. Drag Force

  2. Lift Force

  3. Magnus Effect

  4. Coanda Effect


Correct Option: A
Explanation:

Drag force is the resistance experienced by an object moving through a fluid due to its viscosity.

The equation that describes the conservation of mass for an incompressible fluid is:

  1. Continuity Equation

  2. Navier-Stokes Equations

  3. Euler Equations

  4. Bernoulli's Equation


Correct Option: A
Explanation:

The continuity equation states that the mass of fluid entering a control volume must equal the mass leaving the control volume.

The equations that govern the motion of a viscous fluid are known as:

  1. Navier-Stokes Equations

  2. Euler Equations

  3. Bernoulli's Equation

  4. Darcy-Weisbach Equation


Correct Option: A
Explanation:

The Navier-Stokes equations are a set of partial differential equations that describe the motion of a viscous fluid.

The phenomenon where a fluid flows around an object with minimal separation is called:

  1. Laminar Flow

  2. Turbulent Flow

  3. Boundary Layer Flow

  4. Potential Flow


Correct Option: D
Explanation:

Potential flow is a type of flow where the fluid particles move along streamlines without any separation.

The dimensionless number that characterizes the ratio of inertial forces to viscous forces in a fluid is:

  1. Reynolds Number

  2. Mach Number

  3. Prandtl Number

  4. Nusselt Number


Correct Option: A
Explanation:

Reynolds Number is used to determine whether the flow is laminar, transitional, or turbulent.

The phenomenon where a fluid flows past a bluff body and creates a region of recirculating flow is known as:

  1. Laminar Flow

  2. Turbulent Flow

  3. Boundary Layer Flow

  4. Vortex Shedding


Correct Option: D
Explanation:

Vortex shedding is a phenomenon where vortices are shed from the surface of a bluff body as it moves through a fluid.

The equation that describes the conservation of energy for a fluid is:

  1. Continuity Equation

  2. Navier-Stokes Equations

  3. Euler Equations

  4. Bernoulli's Equation


Correct Option: D
Explanation:

Bernoulli's equation is a statement of the conservation of energy for an incompressible fluid.

The phenomenon where a fluid flows over a curved surface and experiences a pressure gradient is called:

  1. Laminar Flow

  2. Turbulent Flow

  3. Boundary Layer Flow

  4. Curved Flow


Correct Option: D
Explanation:

Curved flow is a type of flow where the fluid particles move along curved streamlines.

The dimensionless number that characterizes the ratio of heat transfer by convection to heat transfer by conduction is:

  1. Reynolds Number

  2. Mach Number

  3. Prandtl Number

  4. Nusselt Number


Correct Option: D
Explanation:

Nusselt Number is used to characterize the heat transfer between a surface and a fluid.

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