Tata Steel Assistant Manager Maintenance Interview Questions and Answers

The total number of hydraulic cylinders in a CCM machine varies depending on the specific model and design.

• The number of hydraulic cylinders in a CCM machine can range from 4 to 12 or more, depending on the size and complexity of the machine.

• Each hydraulic cylinder in a CCM machine serves a specific function, such as controlling the movement of the mold or applying pressure to the molten metal.

• The hydraulic cylinders i...read more

Crane wheel wear is caused by factors such as overloading, misalignment, lack of lubrication, and poor maintenance.

• Overloading the crane beyond its capacity can cause excessive wear on the wheels.

• Misalignment of the crane wheels can lead to uneven wear and premature failure.

• Lack of proper lubrication can increase friction and wear on the wheels.

• Poor maintenance practices, such as not regularly inspecting and replacing

Limits used in EOT crane include overload limit, travel limit, and height limit.

• Overload limit prevents the crane from lifting loads beyond its capacity

• Travel limit restricts the crane's movement within a specified range

• Height limit ensures the crane does not exceed the maximum height for safe operation

Hydraulic system is a technology that uses fluids to transmit power and energy.

• Hydraulic systems use a liquid, usually oil, to transmit power and energy.

• They work by applying force at one point and transmitting it to another point using an incompressible fluid.

• Hydraulic systems are commonly used in heavy machinery, such as excavators and cranes.

• They are also used in braking systems in cars and airplanes.

• Hydraulic syste...read more

Reducing downtime can be achieved through proper maintenance planning, regular equipment inspections, and quick response to issues.

• Implement a preventive maintenance program to identify and address potential issues before they cause downtime.

• Conduct regular equipment inspections to identify and address any issues early on.

• Train employees on proper equipment use and maintenance to prevent breakdowns caused by human erro...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