Tata Steel Machine Operator Interview Questions and Answers

Basic size refers to the theoretical size of a part before any tolerance is applied.

• Basic size is the starting point for applying tolerances in manufacturing.

• It is the size that the part must be in order to function properly.

• For example, if a hole is specified to have a basic size of 10mm, it means that the hole must be exactly 10mm in diameter for the part to work correctly.

Nominal size refers to the size of a part or component as designated by its name or label.

• Nominal size is the size of a part as indicated by its name, but may not be the exact physical dimensions.

• It is commonly used in manufacturing to simplify communication and standardize sizes.

• For example, a 2x4 piece of lumber actually measures 1.5 inches by 3.5 inches.

Limits refer to the maximum or minimum values that a machine or process can handle.

• Limits are set to ensure the machine operates within safe parameters.

• Exceeding limits can result in damage to the machine or product.

• Examples include temperature limits, speed limits, and weight limits.

Basic metrology is the science of measurement, including the study of units, standards, and instruments used for measuring physical quantities.

• Involves understanding units of measurement such as length, mass, and time

• Includes knowledge of measurement standards and calibration procedures

• Utilizes various instruments like rulers, calipers, micrometers, and gauges

• Important for ensuring accuracy and precision in manufacturi