Wind World Electrical Engineer Interview Questions and Answers

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 f...read more

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 trans...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.

Tubelights contain a low-pressure gas, typically argon, and a small amount of mercury vapor, which helps produce light.

• Tubelights primarily use argon gas, which is inert and helps in the ionization process.

• Mercury vapor is also present, which emits ultraviolet light when ionized.

• The UV light then excites the phosphor coating inside the tube, producing visible light.

• Different phosphor coatings can produce various l...read more

Power generation equipment includes generators, turbines, and transformers for producing electricity.

• Generators convert mechanical energy into electrical energy

• Turbines use steam, water, or wind to rotate a shaft connected to a generator

• Transformers increase or decrease voltage for efficient transmission and distribution

• Examples: gas turbines, hydroelectric generators, step-up transformers