Workshop Technology MCQ with Answers

In backhand welding, the angle between the welding rod and the work is same as compared to forehand welding.

Linde welding uses Carburising flame and rightward technique.

The material which can be best cut with oxygen cutting process is Mild steel.

The flux commonly used in brazing is Borax
A flux is required for all brazing and soldering applications.
The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal.
Brazing is essentially similar to soldering but it gives a much stronger joint than soldering. The principal differences is the use of a harder filler material, commercially known as spelter which fuses at some temperature above red heat, but below the melting temperature of the parts to be joined.

In Brazing most commonly used flux is “Borax” for ferrous and non-ferrous metals. It removes rust and prevents atmospheric effect, when brazing operation is going on

Sherardizing is the formation of a corrosion-resistant, zinc-iron alloy coating, on the surface of steel or iron.
The method involves the heating of the object in an airtight container that has zinc powder.
A thermal diffusion process occurs and the zinc diffuses into the object’s metal surface, forming the zinc-iron alloy.