The Melting Factor in Welding Is Correctly Defined by Which

Multiple Choice

The melting factor in welding is correctly defined by which one of the following descriptions:

A) the proportion of the heat received at the work surface that is used for melting
B) the proportion of the total heat generated at the source that is received at the work surface
C) the proportion of the total heat generated at the source that is used for melting
D) the proportion of the total heat generated at the source that is used for welding