Question

____________ is the transfer of heat from one part of a substance to another part of the same substance.

(a) Convection

(b) Conduction

(c) Radiation

(d) None of the mentioned

I got this question in semester exam.

The query is from Engine Heat Transfer topic in chapter Heat Rejection and Cooling of IC Engine

Answer 1

The correct answer is:

(b) Conduction

Conduction is the transfer of heat within a substance or between substances in direct contact, from the hotter part to the cooler part. This occurs through the vibration and movement of particles within the material. In the context of an engine, conduction helps transfer heat from the engine components to the coolant or to other parts of the engine.