Question

Heat sinks work through the process of _______

(a) resistive heat transfer

(b) conductive and convection heat transfer

(c) active process

(d) no heat transfer

I got this question in an interview.

The question is from Transistor Case and Heat Sinks in portion Differential and Multistage Amplifiers of Electronic Devices & Circuits

Answer 1

Correct answer is (b) conductive and convection heat transfer

The explanation: The main purpose of a heat sink is to expel heat from a generating source. Heat sinks work through the process of conductive and convection heat transfer. Heat sinks are a passive form of cooling, as they have no moving parts and require no power. In most cases, heat sinks are used in conjunction with fans.