The directed flow of free electrons (or charge) is called the electric current. The electric current may be classified into three main types: Steady current (DC Current) Varying current Alternating …
1. A shunt generator delivers 450 A at 230 V and the resistance of the shunt field and armature are 50 Ω and 0.03 Ω respectively. Calculate the generated e.m.f? …
1. What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close or open contact members, thus closing or opening an electrical circuit under the normal or …
Unlike Generators and Transformers, Electric Motors are rated in kW instead of kVA. We have already discussed why electric transformers are rated in kVA. This article explains why electric motors …
Did you ever think about what will happen to a transformer on dc supply? In this article, you will learn why the transformer does not work on the DC supply. …
You may be amazed at why the birds don’t get shocked when they sit on high voltage overhead power lines. People often ask why don’t birds get electrocuted on power …
Each year in France, for example, 200 people die of electrocution and 500 suffer serious injuries, often permanent burns, respiratory paralysis, cardiac arrest, etc. The various level electric current have …
The effects of voltage and frequency variation on the transformer is discussed in this article. Usually, power transformers are not subjected to wide frequency variations. Also, modest voltage variations occur …
Single-phase motors are the most familiar of all-electric motors because they are extensively used in home appliances, shops, offices etc. It is true that single-phase motors are a less efficient …