Question

What is the principle by which a cooling system (Radiator) in a motor car works?

• A. Convection
• B. Conduction only
• C. Radiation only
• D. Both conduction and radiation

Answer 1

The correct option is A Convection

Convection is process in which heat transfers takes places between liquid and surrounding air.

So radiator there is liquid present which gets heated and emits that heat into atmosphere.

So Cooling system in motor car works on the principle of convection as a mode of heat transfer.