Why is double earthing necessary for 3-phase machines and equipment?
Why Earthing Important? The main purpose of the earthing of electrical equipment is to avoid the danger of getting electric shock. The proper earthing also
What is the Required Capacitor KVAR for 50 HP Motor?
The motor draws inductive current when a 50 HP induction motor is run by feeding a three-phase AC supply. At the no-load running of the
What is Knee Voltage of PN- Junction Diode?
Definition: The voltage at which the forward-biased diode starts conducting is called the knee voltage or cut-in voltage of the PN junction diode. The Mechanism
Accuracy Limit Factor of Current Transformer
Definition- The accuracy limit factor (ALF) of a current transformer (CT) is a parameter that indicates the highest multiple of the rated current at which
Difference between Active and Passive Components
In this post, we will discuss the difference between Active and Passive components. We can differentiate active & passive components on the basis of the
Difference between Capacitor and Battery
What is Capacitor? A capacitor is a passive two-terminal device that stores electric charge in an electric field. The capacitor has two metallic plates separated
Why can a 50Hz CT work on 60Hz systems, and why can’t a 60Hz C.T. work on a 50 Hz system?
CT or PT functions on the principle of electromagnetic induction. The electrical energy is first converted into magnetic energy and again the magnetic energy is
What is Battery Acid? Its composition and Roles
Battery acid is a dilute solution of sulfuric acid (H₂SO₄) used in lead-acid batteries. Comprising 29%-32% sulfuric acid, it facilitates the flow of electrical current
Why is the terminal voltage less than EMF during discharging of battery?
The equivalent circuit of the battery is given below. A voltage source can be represented as an EMF source with internal series resistance. Under no
What is the Insulation Class of Transformer oil?
We first discuss what it means by insulation class and what is its importance. The insulating material is classified according to the maximum temperature which