ArcelorMittal Nippon Steel Junior Mechanical Engineer Interview Questions and Answers

Alignment of mould is crucial for ensuring proper functioning and quality of the final product.

• Ensure mould components are properly assembled and secured

• Use alignment tools such as dial indicators or laser alignment systems

• Check for any misalignments or discrepancies and make necessary adjustments

• Regularly inspect and maintain the mould to prevent misalignment issues

• Consult with senior engineers or experts for guidance

To solve mould vibration problem, identify root cause, adjust machine settings, use vibration dampening materials, and regularly maintain equipment.

• Identify the root cause of the vibration issue by inspecting the mould and surrounding equipment.

• Adjust machine settings such as speed, pressure, and temperature to minimize vibration.

• Use vibration dampening materials like rubber pads or mounts to reduce the impact of vibra...read more

Types of maintenance include preventive, predictive, corrective, and proactive maintenance.

• Preventive maintenance involves regular inspections and maintenance to prevent breakdowns.

• Predictive maintenance uses data and analytics to predict when equipment will need maintenance.

• Corrective maintenance is performed after a breakdown has occurred to restore functionality.

• Proactive maintenance involves identifying and fixing

There are mainly three types of bearings nomenclature: ball bearings, roller bearings, and plain bearings.

• Ball bearings

• Roller bearings

• Plain bearings

Types of gearboxes include spur, helical, bevel, worm, and planetary. The most commonly used gearbox in our plant is the helical gearbox.

• Types of gearboxes: spur, helical, bevel, worm, planetary

• Helical gearbox is commonly used for its efficiency and smooth operation

• Spur gearbox is simple and cost-effective

• Bevel gearbox is used for right angle drives

• Worm gearbox provides high torque but lower efficiency

Industrial hydraulic system consists of various components like relief valve, pressure reducing valve, and directional control valves (DCVs) to control the flow and pressure of hydraulic fluid.

• Industrial hydraulic system uses hydraulic fluid to transmit power.

• Relief valve is used to limit the maximum pressure in the system to prevent damage.

• Pressure reducing valve is used to maintain a constant pressure in a branch of ...read more

Types of alignment include shaft alignment, coupling alignment, and belt alignment. Each process involves ensuring components are properly positioned for optimal performance.

• Shaft alignment involves aligning the shafts of rotating machinery to prevent vibration and wear.

• Coupling alignment ensures that the coupling connecting two shafts is properly aligned to prevent misalignment issues.

• Belt alignment involves aligning ...read more

A bearing is considered failed when it shows signs of excessive wear, noise, vibration, or overheating.

• Excessive noise during operation

• Vibration felt in the equipment

• Overheating of the bearing

• Visible signs of wear or damage on the bearing surface

• Loss of lubrication leading to increased friction

MIG and TIG welding are two common types of arc welding processes used in metal fabrication.

• MIG welding stands for Metal Inert Gas welding, where a wire electrode is fed through a welding gun and melted to join two pieces of metal together.

• TIG welding stands for Tungsten Inert Gas welding, where a non-consumable tungsten electrode is used to create the weld. A separate filler rod may be used if needed.

• MIG welding is fa...read more

Key features for installation of Power Plant include location selection, environmental impact assessment, equipment installation, and safety measures.

• Location selection is crucial for accessibility to resources and transmission lines.

• Environmental impact assessment must be conducted to ensure compliance with regulations.

• Proper installation of equipment such as turbines, generators, and transformers is essential for eff...read more

Thermodynamic cycles and PV TS diagrams are fundamental concepts in mechanical engineering.

• Thermodynamic cycles are processes that involve the transfer of heat and work between a system and its surroundings.

• PV TS diagrams are graphical representations of thermodynamic processes.

• Examples of thermodynamic cycles include the Carnot cycle, Rankine cycle, and Brayton cycle.

• PV TS diagrams can be used to analyze the efficienc...read more