Quick Messenger Service Quality Process Inspector Interview Questions and Answers

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

• The least count is determined by the smallest division on the main scale and the number of divisions on the Vernier scale.

• To calculate the least count, divide the smallest division on the main scale by the number of divisions on the Vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the Vernier ...read more

Defects in castings include porosity, shrinkage, cracks, inclusions, and dimensional inaccuracies.

• Porosity: air or gas pockets within the casting

• Shrinkage: uneven cooling causing voids or gaps

• Cracks: fractures in the casting

• Inclusions: foreign materials embedded in the casting

• Dimensional inaccuracies: deviations from the desired measurements

Different types of castings include sand casting, investment casting, die casting, and continuous casting.

• Sand casting: Uses sand molds to create the casting.

• Investment casting: Uses a wax pattern that is coated with a ceramic shell to create the casting.

• Die casting: Uses a metal mold to create the casting.

• Continuous casting: Involves the continuous pouring of molten metal into a mold to create long castings.

• Other type...read more