Question

What is the main difference between free convection and forced convection?

Options

• Free convection uses water; forced convection uses air

• Free convection occurs naturally; forced convection uses a fan to accelerate airflow

• Free convection is faster than forced convection

• Forced convection does not involve heat transfer

Answer 1

Free convection occurs naturally; forced convection uses a fan to accelerate airflow

Explanation:

Forced convection is achieved by "employing a fan to create a rapid circulation of fresh air," unlike free convection which happens on its own.