HMT UNIT 2 Free and Forced Convection

What is the difference between free and forced convection?

• Free Convection is the natural movement of fluid caused by differences in density, while Forced Convection is caused by an external force such as a fan or pump

• Free Convection is the movement of fluid caused by an external force such as a fan or pump, while Forced Convection is the natural movement of fluid caused by differences in density.

• Both Free and Forced Convection are the natural movement of fluid caused by differences in density.

• Both Free and Forced Convection are the movement of fluid caused by an external force such as a fan or pump.

What is the main cause of free convection?

• An external force such as a fan or pump

• Differences in fluid density

• Differences in fluid temperature

• Differences in fluid velocity

What is the main cause of forced convection?

• Differences in fluid density

• Differences in fluid temperature

• An external force such as a fan or pump

• Differences in fluid velocity

What are the two types of free convection?

• Natural and Artificial

• Internal and External

• Natural and Forced

• Laminar and Turbulent

What are the two types of forced convection?

• Natural and Artificial

• Internal and External

• Natural and Forced

• Laminar and Turbulent

What happens to the velocity of a fluid during free convection?

• Increases

• Decreases

• Remains constant

•  Fluctuates

    What is the effect of an increase in fluid temperature on its velocity during free convection?

• Velocity increases

• Velocity decreases

• Velocity remains constant

• Fluctuates