Aarti Industries Electrical Incharge Interview Questions, Process, and Tips

The existing electrical network refers to the current system of electrical infrastructure in place.

• The existing electrical network includes power generation, transmission, and distribution systems.

• It may also include electrical equipment and devices such as transformers, switchgear, and meters.

• The network may be owned and operated by a utility company or other entity.

• The network may have limitations or challenges such ...read more

Motor and transformer protection schemes are used to prevent damage to the equipment and ensure safe operation.

• Motor protection schemes include overload protection, short circuit protection, and earth fault protection.

• Transformer protection schemes include overcurrent protection, differential protection, and earth fault protection.

• Motor and transformer protection schemes can be achieved through the use of fuses, circui...read more

Transformer oil tests include dielectric strength, acidity, interfacial tension, and dissolved gas analysis.

• Dielectric strength test measures the ability of oil to withstand electrical stress

• Acidity test determines the acidity level of oil

• Interfacial tension test measures the oil's ability to separate from water

• Dissolved gas analysis identifies the presence of gases in the oil, indicating potential faults in the transf...read more

Reverse synchronisation relay is a protective relay used to prevent the generator from being synchronized with the grid in the wrong direction.

• It is used to prevent the generator from being synchronized with the grid in the wrong direction

• It detects the reverse power flow from the grid to the generator

• It trips the generator breaker if the reverse power flow exceeds a certain limit

• It is important for the safety of the g

DG stands for Diesel Generator. It is used as a backup power source in case of power outages or emergencies.

• DG is connected to the existing electrical network through an Automatic Transfer Switch (ATS)

• The ATS detects when there is a power outage and automatically switches the power source from the main grid to the DG

• Once the main power is restored, the ATS switches the power source back to the grid and the DG is turned...read more