Tata Steel Mechanical Maintenance Supervisor Interview Questions and Answers

Check for hydraulic cylinder leakage by inspecting for oil puddles, decreased performance, and abnormal noises.

• Inspect the area around the hydraulic cylinder for oil puddles or stains

• Monitor the performance of the hydraulic system for any decrease in efficiency

• Listen for any abnormal noises coming from the hydraulic cylinder during operation

NAS stands for Network Attached Storage, which is a type of storage device that connects to a network to provide shared storage space.

• NAS devices are typically used for storing and sharing files, data backups, and media streaming within a network.

• NAS devices can be accessed by multiple users and devices simultaneously over a network.

• NAS devices often have their own operating system and can run various applications such...read more

Pumps work by creating a pressure difference to move fluid from one place to another.

• Pumps use mechanical energy to increase the pressure of a fluid and move it through a system

• They can be classified into different types such as centrifugal pumps, positive displacement pumps, etc.

• The working principle involves the conversion of mechanical energy into hydraulic energy

• Examples include water pumps in buildings, fuel pumps

Cooling towers work on the principle of evaporative cooling to remove heat from a process or building.

• Cooling towers use water as a cooling medium to absorb heat from a process or building.

• The hot water is pumped to the top of the tower and distributed over the fill media.

• As the water flows over the fill media, some of it evaporates, taking away heat and cooling the rest of the water.

• The cooled water is then collected ...read more

Pollution bag filter specifications include material type, filtration efficiency, airflow capacity, and pressure drop.

• Material type: Bag filters can be made of various materials such as polyester, polypropylene, or fiberglass.

• Filtration efficiency: This indicates the percentage of particles the filter can capture. Higher efficiency filters are more effective but may have higher pressure drops.

• Airflow capacity: The maxi...read more

The formula for centrifugal pump head is H = (Q * SG) / (3.14 * D^2 * 2.31)

• Head (H) is calculated using the flow rate (Q), specific gravity (SG), and diameter of the impeller (D)

• The formula is derived from the basic equation for head in a centrifugal pump

• Example: H = (100 gpm * 1.0) / (3.14 * 0.5^2 * 2.31) = 45.75 ft

Preventive maintenance is a proactive approach to maintenance that involves regularly inspecting, servicing, and repairing equipment to prevent breakdowns and extend its lifespan.

• Preventive maintenance involves scheduled inspections and maintenance tasks.

• It aims to identify and address potential issues before they cause equipment failure.

• Examples of preventive maintenance include lubricating moving parts, replacing wor...read more

There are several types of valves used in mechanical systems.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Plug valve

• Needle valve

• Pressure relief valve

• Safety valve