Robot Operator Interview Questions and Answers

The least count of a vernier caliper is the smallest measurement that can be read on the scale.

• The least count is typically 0.02 mm or 0.001 inches on a standard vernier caliper.

• It is determined by the number of divisions on the main scale and the vernier scale.

• For example, if the main scale has 20 divisions and the vernier scale has 10 divisions, the least count would be 0.02 mm.

Types of welding machines include MIG, TIG, stick, and flux-cored.

• MIG (Metal Inert Gas) welding uses a wire electrode and a shielding gas.

• TIG (Tungsten Inert Gas) welding uses a tungsten electrode and a separate filler material.

• Stick welding, also known as Shielded Metal Arc Welding (SMAW), uses a flux-coated electrode.

• Flux-cored welding uses a tubular wire filled with flux to protect the weld pool.