Wind World Interview Questions, Process, and Tips

VCB, SF6, CT, PT, LA are all electrical equipment used in power systems.

• VCB stands for Vacuum Circuit Breaker and is used for switching and protection of electrical power systems.

• SF6 is a gas used as an insulating medium in high voltage electrical equipment such as circuit breakers, switchgear, and transformers.

• CT stands for Current Transformer and is used to measure electrical current in power systems.

• PT stands for Po...read more

Copper and aluminum are commonly used conductors in transmission.

• Copper is an excellent conductor due to its high electrical conductivity.

• Aluminum is also widely used as it is lightweight and cost-effective.

• Other conductors like silver and gold are rarely used due to their high cost.

• Copper-clad steel conductors are used in specific applications where strength is required.

Different types of tests related to transformers include routine tests, type tests, and special tests.

• Routine tests are performed on every transformer and include measurement of winding resistance, insulation resistance, and voltage ratio.

• Type tests are performed on a sample transformer to verify its design and include temperature rise test, impulse test, and short-circuit test.

• Special tests are performed on transforme...read more

Different types of faults refer to the various abnormalities that can occur in an electrical system.

• Short circuit fault

• Open circuit fault

• Ground fault

• Overvoltage fault

• Undervoltage fault

• Overcurrent fault

• Undercurrent fault

Relays are switches that open and close circuits electromechanically or electronically. There are various types of relays.

• Electromechanical relays

• Solid-state relays

• Reed relays

• Polarized relays

• Time-delay relays

• Overload protection relays

• Mercury-wetted relays

• Latching relays

• Machine tool relays

• Thermal relays

Transformers work on the principle of electromagnetic induction.

• Transformers consist of two coils, known as primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

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

• The voltage induced in the secondary coil depends on the ratio of the number of turns in the primary and secondary coils...read more

Switch gears are electrical devices used to control, protect and isolate electrical equipment.

• Switch gears are used in power distribution systems to control the flow of electricity.

• They protect electrical equipment from damage caused by overloads, short circuits, and other faults.

• Switch gears can be classified into low voltage and high voltage depending on the voltage level they operate at.

• Examples of switch gears incl...read more