Exam 25: Fundamentals of Welding

Welding can only be performed on metals that have the same melting point; otherwise, the metal with the lower melting temperature always melts while the other metal remains solid:

For metallurgical reasons, it is desirable to melt the weld metal with minimum energy input.Which one of the following heat sources is most consistent with this objective:

Power density can be defined as the rate of heat energy transferred to the work per unit surface area:

Groove welds are most closely associated with which one of the following joint types:

Weld failures always occur in the fusion zone of the weld joint, because this is the part of the joint that has been melted:

Which of the following welding processes are classified as solid-state welding (two correct answers):

A flange weld is most closely associated with which one of the following joint types:

The amount of heat required to melt a given volume of metal depends strongly on which of the following properties (three best answers):

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

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

Which one of the following welding operations generates the highest power density:

A fillet weld can be used to join which of the following joint types (three correct answers):

A fillet weld has a cross-sectional shape that is approximately which one of the following:

A surfacing weld is a weld in which one or more parts are joined to the surface of flat plate stock:

Which one of the following welding operations generates the lowest power density:

An autogenous weld is best described as which one of the following: