SAN INTERNATIONAL Interview Questions and Answers

There are several types of couplings used in the steel industry for connecting shafts and transmitting power.

• Flexible couplings

• Rigid couplings

• Gear couplings

• Grid couplings

• Disc couplings

• Universal joints

There are several types of bearings including ball bearings, roller bearings, and plain bearings, each with their own advantages.

• Ball bearings: low friction, high speed capability, and low maintenance. Example: deep groove ball bearings.

• Roller bearings: higher load capacity and shock resistance. Example: cylindrical roller bearings.

• Plain bearings: simple design, cost-effective, and suitable for high loads and speeds. Example: sleeve bearings.

There are several types of crushers used in various industries for crushing different materials.

• Jaw crusher - used for primary crushing of various materials

• Impact crusher - used for secondary or tertiary crushing of materials like concrete and asphalt

• Cone crusher - used for fine crushing of materials like ore and rock

• Roll crusher - used for reducing the size of large rocks or ores

• Hammer crusher - used for crushing materials like coal and limestone

Conveyor maintenance involves regular inspections, cleaning, lubrication, and replacement of worn parts to ensure smooth operation.

• Regularly inspect the conveyor belt for wear and tear

• Clean the conveyor system to prevent buildup of debris

• Lubricate moving parts to reduce friction and wear

• Replace worn out parts such as rollers, bearings, and belts

• Train staff on proper operation and maintenance procedures

There are two main types of reducers: concentric reducers and eccentric reducers.

• Concentric reducers have a common center line while eccentric reducers have offset center lines.

• Concentric reducers are used when there is a need to maintain the same center line for fluid flow.

• Eccentric reducers are used when there is a need to prevent air or vapor accumulation in the system.

• Examples include reducing from a 6-inch pipe to a 4-inch pipe (concentric) or from a 6-inch pipe to a 4-i...read more

There are several types of bearings used in various applications.

• There are several types of bearings including ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings are the most common type and are used in applications such as wheels and conveyor belts.

• Roller bearings are used in heavy machinery and vehicles.

• Plain bearings are simple bearings that rely on surface contact.

• Fluid bearings use a thin layer of liquid or gas to support the load.

• Other type...read more

Coupling is the degree of interdependence between modules in a system.

• Coupling refers to how much one module relies on another module.

• There are different types of coupling such as tight coupling and loose coupling.

• Tight coupling means modules are highly dependent on each other, while loose coupling means they are more independent.

• Reducing coupling in a system can improve its flexibility and maintainability.

• Examples of reducing coupling include using interfaces to decouple mod...read more

A bearing is a machine element that allows one part to bear another part's motion.

• Bearing reduces friction between moving parts

• Common types include ball bearings, roller bearings, and plain bearings

• Used in various applications such as automotive, industrial machinery, and aerospace