Power Grid Corporation of India Electrician Interview Questions and Answers

DFIG technology stands for doubly fed induction generator, which is a type of wind turbine generator system.

• DFIG technology uses a wound rotor induction generator with a partial-scale power converter to control the rotor current.

• The power converter allows for variable speed operation and improved efficiency.

• DFIG technology is commonly used in modern wind turbines to maximize energy capture and grid stability.

• It allows ...read more

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

• Transformers work on the principle of electromagnetic induction

• They have two coils - primary and secondary

• The primary coil is connected to a source of alternating current

• This alternating current creates a changing magnetic field

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

• The v...read more

An induction motor works on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Induction motor has a stator and a rotor.

• When AC current is passed through the stator windings, a rotating magnetic field is produced.

• The rotating magnetic field induces currents in the rotor windings, causing it to rotate.

• The rotor speed is slightly less than the speed of the rotating magnetic fie...read more

I am looking for a competitive salary based on my experience, skills, and the industry standard.

• Research the average salary range for engineers in your location and industry

• Consider your years of experience, education level, and specialized skills

• Be prepared to negotiate based on the job responsibilities and benefits package offered