Question

Heat diffusivity does not depend on which of the following?

(a) Thermal conductivity

(b) Specific heat

(c) Latent heat

(d) Density of the material.

I got this question by my college director while I was bunking the class.

This is a very interesting question from Functions of a Riser topic in division Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

The correct answer is (c) Latent heat

The explanation is: Heat diffusivity depends on thermal conductivity, specific heat and the density of the material, by the formula heat diffusivity = (kcp)1/2. Hence, heat diffusivity does not depend on latent heat.