Twad Board Interview Questions and Answers

The process of making steel involves converting iron ore into steel through various stages of heating, melting, and refining.

• 1. Iron ore is mined and transported to a steel mill.

• 2. The iron ore is then processed in a blast furnace to remove impurities and create pig iron.

• 3. The pig iron is further refined in a basic oxygen furnace or an electric arc furnace to produce steel.

• 4. The steel is then cast into various shapes or forms, depending on the desired end product.

• 5. The fin...read more

Preventive maintenance involves regular inspections and maintenance to prevent breakdowns, while breakdown maintenance is performed after a breakdown occurs.

• Preventive maintenance is planned maintenance performed on a regular basis to prevent equipment failure.

• Breakdown maintenance is reactive maintenance performed after a breakdown has occurred to restore equipment to working condition.

• Types of couplings include rigid, flexible, and fluid couplings.

• Rigid couplings do not all...read more

The appropriate temperature for hot metal is typically between 2000-2300 degrees Fahrenheit to ensure proper forging and shaping.

• Hot metal is usually heated to a temperature range of 2000-2300 degrees Fahrenheit for forging and shaping processes.

• This temperature range allows the metal to be malleable enough for shaping without being too hot to cause excessive oxidation or burning.

• Different types of metals may have specific temperature requirements for optimal forging and shap...read more

A shaft is a rotating machine element used to transmit power. Tolerance is the allowable deviation from a specified dimension.

• Shaft is a mechanical component used to transmit power from one part of a machine to another.

• Tolerance is the permissible limit or limits of variation in a physical dimension.

• Types of tolerance include bilateral tolerance, unilateral tolerance, and limit tolerance.

Types of pumps include centrifugal pumps, positive displacement pumps, and axial flow pumps.

• Centrifugal pumps use a rotating impeller to create a flow of fluid.

• Positive displacement pumps move fluid by trapping a fixed amount and forcing it through the discharge.

• Axial flow pumps move fluid parallel to the pump shaft.

• Examples: Centrifugal pump - water pump, Positive displacement pump - gear pump, Axial flow pump - propeller pump