Why there is no neutral wire in three phase?
Friends, whenever we talk about single phase, we take one phase and one neutral wire, but in three-phase, we take three phase wire. We do not take neutral wire in…
What is DGA test in Transformer and how to DGA test ?
If you are going to give an interview as Electrical Supervisor, then many question asked in interview from transformer DGA test. but many people have doubt in DGA test. In this…
What is Lightning arrestor and Surge arrestor?
In today's post, we will talk about what is lightning arrester and surge arrester? Friends, many people are confused between these two, and some think that both are the same,…
Why Rotor Slots are Skewed?
If you are from electrical engineering, you know that many questions about motors are asked in exams and interviews. But friends, one such question that most people ignore is, Why…
Why is Black cylinder or ferrite bead used?
Friends, you must have seen a cylinder connected with your laptop, computer, or TV cable. As in the photo below, there is a black cylinder. But if you are asked…
Why humming sound in transmission line?
Friends, whenever you go near the transmission line, you hear sounds like zi.. zi.. zi... In technical language, this sound is called humming sound. Friends, now the question comes to…
What is PCC and MCC panel?
If you are working in the industry, then you must have heard the name of PCC and MCC panels. Some people have a lot of confusion in them. But in…
Why VFD Drive Used on Motor?
If you are from electrical engineering, you must have heard the name of VFD starter, or you have seen VFD installed on the motor in the industry. But if asked…
How to do Interlocking in Electrical System?
If you are from electrical, then you may listen about electrical interlocking at many times. Because in the industry, whenever two contactors operate the motor then mostly said that contactor…
What is Contactor and why used?
Friends, if you are connected with electrical, then you must have heard the name of the contactor, but if any question related to the contactor is asked in the interview…