Voltamp Transformers Interview Questions, Process, and Tips

Understanding IS and root cause of failure is crucial for preventing future issues in production.

• IS stands for Information Systems, which are used to collect, store, process, and distribute information within an organization.

• Root cause analysis is a method used to identify the underlying cause of a problem or failure.

• Having a strong understanding of IS can help identify potential failures in the production process and ...read more

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire, known as primary and secondary coils

• Primary coil is connected to a source of alternating current

• Alternating current in primary coil creates a changing magnetic field

• This changing magnetic field induces a voltage in the secondary coil

• Voltage in secondary coil can be hig...read more

Safety devices in transformers include pressure relief devices, Buchholz relay, and temperature sensors.

• Pressure relief devices are used to release excess pressure in the transformer to prevent explosions.

• Buchholz relay is a gas and oil operated relay that detects internal faults in the transformer.

• Temperature sensors are used to monitor the temperature of the transformer and prevent overheating.

Controlling devices in transformers are used to regulate voltage, protect against overloads, and ensure efficient operation.

• Controlling devices such as tap changers are used to adjust the voltage ratio of the transformer to maintain a constant output voltage.

• Protective devices like relays are used to detect and isolate faults such as overloads, short circuits, and overvoltage conditions.

• Monitoring devices like temperat...read more

Delta connection and star connection are two types of connections used in electrical circuits. Delta connection is used for three-phase systems, while star connection is used for single-phase systems.

• Delta connection is used in three-phase systems where the load is balanced and the power requirement is high.

• Star connection is used in single-phase systems where the load is unbalanced and the power requirement is low.

• Del...read more