BASSEIN CATHOLIC CO-OP BANK Interview Questions and Answers

The tube mill shaft should undergo heat treatment to improve its strength and durability.

• The most common heat treatment for tube mill shafts is quenching and tempering.

• Quenching involves heating the shaft to a high temperature and then rapidly cooling it in water or oil to increase its hardness.

• Tempering is done after quenching to reduce the brittleness caused by the rapid cooling process.

• Other heat treatment methods like annealing or normalizing may also be used depending on...read more

In cold rolling mill process, the structure of steel is altered through compression and deformation.

• Cold rolling reduces the thickness of steel by compressing it between rollers

• This process increases the strength and hardness of the steel

• Grain structure of the steel becomes elongated and aligned in the direction of rolling

• Cold rolling can also improve the surface finish and dimensional accuracy of the steel

• Examples: Cold rolled steel sheets used in automotive industry for bod...read more

Pickling process is a metal surface treatment method to remove impurities and improve corrosion resistance.

• Pickling is a chemical process used to remove impurities like stains, rust, and scale from metal surfaces.

• It involves immersing the metal in an acidic solution, such as hydrochloric acid or sulfuric acid.

• The process helps to improve the metal's corrosion resistance and prepare it for further treatments like painting or coating.

• Common examples of pickled metals include st...read more

Types of loading on bearings include radial load, axial load, and moment load.

• Radial load: Load acting perpendicular to the axis of rotation.

• Axial load: Load acting parallel to the axis of rotation.

• Moment load: Load causing bending or twisting of the bearing.

• Combination loading: Bearings may experience a combination of radial, axial, and moment loads.

• Examples: Radial load on a wheel bearing, axial load on a thrust bearing, moment load on a shaft bearing.

Tube mill rolls are typically made of high-quality alloy steel or tool steel, with varying root diameters depending on the specific application.

• Tube mill rolls are commonly made of materials such as high-quality alloy steel or tool steel for durability and wear resistance.

• The root diameter of tube mill rolls can vary depending on the specific requirements of the milling process.

• Examples of tube mill roll materials include D2 tool steel, H13 tool steel, and high-speed steel.

• Ro...read more

Various types of cranes are used in mechanical maintenance, including overhead cranes, gantry cranes, jib cranes, and mobile cranes.

• Overhead cranes are commonly used in industrial settings for lifting and moving heavy loads.

• Gantry cranes are used in shipyards and construction sites for lifting and moving large objects.

• Jib cranes are often used in workshops and warehouses for precise lifting and positioning of materials.

• Mobile cranes are versatile and can be moved to different...read more

Gear box ratio determines the relationship between input and output speeds, while output power is the amount of work done per unit of time.

• Gear box ratio is the ratio of the number of teeth on the input gear to the number of teeth on the output gear.

• Output power is the product of the force applied and the distance over which the force is applied per unit of time.

• For example, if a gear box has a ratio of 2:1 and the input power is 100 watts, the output power would be 50 watts.