Transformer – FAQ | Interview Questions -Part 3
What is the purpose of transformer oil? Transformer oil functions as a coolant as well as insulating material. It also enables transformer protection during internal faults. It is chemically stable…
Why is electricity transmitted at high voltages?
You might have noticed huge towers supporting the high voltage transmission lines in your locality. These high voltage lines transmit electric power generated at power stations which are situated at…
Transformer FAQ | Interview Questions -Part -2
How does a transformer work? A transformer is an electric machine that converts AC voltage from one level to another level with minimum power loss. It is based on the…
Why are transformers rated in KVA?
Transformers are rated in kVA or VA and not in kilowatts. While electric loads such as motors, lamps, heaters, etc. are always rated in kW, equipment used for power generation…
Transformer FAQ and Transformer Interview Questions
Here are the most frequently asked transformer interview questions and their answers What is a transformer? By definition, a transformer is a static electrical device that transforms electric energy from…
Why is the earth pin in a three-pin plug longer and thicker than the other pins?
Safety is the primary element of any circuit or electrical connection. Whether it is electric iron or refrigerator or any other home appliances, everywhere safety has to be ensured to…
Difference between neutral and earth / ground
This article focus on explaining the similarities and dissimilarities between neutral and earth (ground). Understanding the difference between neutral and earth may be difficult in the beginning. A Lot of…
Difference between over-current and overload
Over-current and overload are abnormal conditions occurring in a circuit. This article well explains the difference between over-current and overload. Difference between over-current and overload Over-current Any situation in which…
Difference between Short circuit and overload
Short Circuit A short circuit occurs when two or more current-carrying conductors of different phases or different voltage levels or different terminal (in DC circuits) come in contact with each…
Why ammeter is connected in series?
An Ammeter is a device used to measure the current flow through a conductor. The name is derived from the unit of current, Ampere. This article explains why is ammeter…