Question

Why is radiator provided?

(a) To cool the jacket water

(b) To pressurize the cooling water

(c) To provide additional water flow

(d) To cool the external surface of the engine

I got this question in an interview.

The origin of the question is Heat Rejection and Cooling in section Nonconventional Engines, Conventional Energy Sources & Cooling System of Automobile Engineering

Answer 1

The correct answer is (a) To cool the jacket water

Best explanation: Radiator is provided to cool the jacket water. The heat from the combustion gases is transferred to the various parts of the engine like cylinder head and walls, piston and valves.