Aarti Industries Maintenance Electrician Interview Questions and Answers

Relay coordination principle ensures that the protective devices operate in a coordinated manner to isolate the faulted section.

• Relay coordination principle is used to ensure that the protective devices operate in a coordinated manner to isolate the faulted section.

• It involves selecting the appropriate time-current characteristic curves for the protective devices.

• The aim is to ensure that the protective device closest ...read more

TG protection details with rated setting

• TG protection refers to transformer generator protection

• Rated setting refers to the maximum allowable current or voltage that the protection system can handle

• The protection system should be able to detect and isolate faults in the TG system

• The rated setting should be set based on the maximum expected fault current or voltage

• The protection system should be regularly tested and mai

NGR function with auto operation

• NGR stands for Neutral Grounding Resistor

• It is used to limit the fault current in a power system

• Auto operation means the NGR is automatically switched on or off based on the system conditions

• This helps in protecting the equipment and personnel from damage or harm

Daily maintenance planning schedule involves scheduling and prioritizing maintenance tasks.

• Create a list of maintenance tasks

• Prioritize tasks based on urgency and importance

• Assign tasks to team members

• Set deadlines for completion

• Regularly review and adjust schedule as needed

Hydraulic pump is a device that converts mechanical energy into hydraulic energy. Centrifugal pump is a type of pump that uses centrifugal force to move fluid. Tube bundle dryers are used to dry materials in a tube. Root blower is a type of positive displacement blower.

• Hydraulic pump converts mechanical energy into hydraulic energy

• Centrifugal pump uses centrifugal force to move fluid

• Tube bundle dryers are used to dry m...read more

A bearing is a machine element that allows one part to rotate or move freely relative to another part.

• 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 household appliances

My hobby is woodworking, where I enjoy creating furniture and home decor items.

• Woodworking is a creative outlet for me

• I enjoy designing and building furniture pieces

• I like working with different types of wood and finishes

Gear box failure can be caused by various reasons such as lack of lubrication, overheating, worn out gears, or improper maintenance.

• Lack of lubrication causing increased friction and wear on gears

• Overheating leading to thermal expansion and distortion of gears

• Worn out gears due to prolonged usage without replacement

• Improper maintenance such as infrequent oil changes or ignoring warning signs

The type of lubricant used depends on the specific equipment and application, such as grease for bearings or oil for gears.

• Consider the operating conditions of the equipment, such as temperature and load

• Choose the appropriate viscosity and additives for the specific application

• Regularly monitor and maintain the lubricant levels to ensure optimal performance

• Examples: grease for bearings, oil for gears, silicone lubrican

The type of conveyor belt used in the maintenance process.

• Rubber conveyor belts are commonly used for general maintenance purposes.

• Steel conveyor belts are used for heavy-duty applications.

• Modular plastic conveyor belts are used for food processing and packaging.