Transformer Over Fluxing Protection
The transformer over-fluxing protection protects the core from overheating caused by over-fluxing. The voltage and frequency ratio(v/f) is responsible for over-fluxing in the transformer. In … Read more
Over Fluxing in Transformer
How does the transformer work? The transformer has two coils wound around a common magnetic core. When an alternating voltage is applied to the primary … Read more
Why DC Series Motor should not be Started at No Load
The DC series motor attains dangerously high speed when we run it on no load. The main reason for overspeeding is that at no load, … Read more
Why is Star Delta Starter Preferred with an Induction Motor?
In star delta starting, the phase voltage is 58 % of the line voltage when the motor is first connected in the star connection. The … Read more
DC Shunt Motor : Construction, Speed Control & Characteristics
In this post, we will discuss the construction, speed control, and characteristics of DC shunt motors. CONSTRUCTION OF SHUNT DC MOTOR The field winding of … Read more
Why Are Rotor Bars Skewed in An Induction Motor?
What is Skewing of Rotor Slots? As shown in the above picture, the rotor bars of an induction motor are not parallel with the shaft, … Read more
Star Delta Starter | Working Principle, Power and Control Circuit Diagram
Introduction to Star Delta starter: Star delta starters are widely used to start a three-phase induction motor. In star-delta starting, the motor is first connected … Read more
Why is Diode Non-Ohmic Semiconductor Device?
Difference Between Ohmic and non-Ohmic Conductors: Ohmic Conductors: The conductors that obey the ohm’s law are called ohmic conductors. In an ohmic conductor, the current … Read more
Direct Online Starter (DOL Motor Starter): Circuit Diagram and Working Principle
Direct online starter is a method of starting an induction motor. The stator of the motor receives the full supply voltage in the DOL starter. … Read more
Difference between Earthing, Grounding, and Neutral
In this article, we will explore the difference between grounding and neutral in electrical systems. While grounding and earthing may seem like interchangeable terms, there … Read more