Pranjul Yadav

I am an Electrical Engineer with qualifications in ITI, Diploma, and B.Tech. I have worked as an ITI college instructor for 3 years and have over 5 years of hands-on experience in the electrical field. The information shared on this website is based on trusted electrical engineering textbooks such as P.S. Bimbhra, B.L. Theraja, V.K. Mehta, and real-world practical experience.

Direct Loading Test on a Transformer: Circuit Diagram, Procedure, Calculation, Advantages, Disadvantages

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Direct Loading Test on a transformer

Introduction Transformers are essential electrical machines that require proper testing to ensure reliable operation, efficiency, and safety. Several testing methods are used to analyze transformer performance, such as: 2. Importance of Direct Loading Test on a Transformer Performance Evaluation The Direct Loading Test on a transformer holds special significance because: This test directly measures input … Read more

losses and efficiency in transformer: Core, Copper, Iron, with Efficiency Formula

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losses and efficiency in transformer

Introduction A transformer is one of the most vital electrical machines used in power systems. Its primary role is to step up or step down voltage levels, making power transfer more reliable and economical. Transformers ensure smooth and efficient power transmission from generating stations to end users, reducing waste and maintaining system stability. The transformer’s performance … Read more

Voltage Regulation in Transformer: Definition, Formula, Examples & Negative Regulation Explained

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Voltage Regulation in Transformer

When a transformer is supplied with a fixed applied voltage at its primary winding, the secondary terminal voltage does not always remain constant. If the magnitude or power factor of the load connected to the secondary side changes, a corresponding change in is observed. This change occurs due to the voltage drops across the winding … Read more

Top 10 Powerful Insights into the Equivalent Circuit of a Transformer:

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Equivalent Circuit of a Transformer:

1. Introduction Transformers are vital components in electrical power systems, used to step up or step down voltages efficiently. However, a real transformer is not perfect — it has losses and non-idealities. The equivalent circuit is a simplified model that represents these imperfections, helping engineers analyze and design transformers effectively. 2. What is an Equivalent … Read more

Leakage Reactance in Transformer: Formula, Factors, Impact, Measurement

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Leakage Reactance in Transformer

1. Introduction A transformer is a key device in electrical power systems. It moves electrical energy from one circuit to another using electromagnetic induction. In an ideal world, transformers would work perfectly with no losses or voltage drops. But in real life, they have limits. One important factor is leakage reactance. This affects how well … Read more

Operation of Transformer in On-Load Condition: Phasor Diagram, Load Effects

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Operation of Transformer in On-Load Condition

Operation of Transformer in On-Load Condition To understand the operation of a transformer in load, let us first recall its on-load condition. In the on-load state, when an input voltage is applied across the primary winding, a small on-load current flows. This current establishes a magnetic flux in the transformer core. What is a Transformer? … Read more

Difference Between Ideal and Practical Transformer

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Difference Between Ideal and Practical Transformer

Difference Between Ideal and Practical Transformer When it comes to learning about transformers, two terms often pop up: ideal transformer and practical transformer. They sound similar, but there’s a big difference between them. Let’s explore it in a way that’s easy to understand. What is a Transformer? A transformer is an electrical device that transfers … Read more

brake test of dc motor: Working, efficiency,Advantage and disadvantages

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brake test of dc motor

Understanding the brake test of dc motor: Imagine trying to find out how well a DC motor is working—how much of the electrical power it uses turns into useful mechanical work. One easy and direct way to check this in a lab is by do something called a Brake Test. Let’s break it down in … Read more

Two-Point Starter: Construction, Working, Diagram, Advantages,

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Two-Point Starter

Two-Point Starter A two-point starter is used for starting DC series motors. It is a simple device that helps control the starting current to prevent damage to the motor. A Two-Point Starter is a simple device used FOR safely starting a DC series motor. When a motor starts, it can draw a large amount of … Read more

Three-Point Starter: Diagram, Construction, Working, Limitations

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Three-Point Starter

Three-Point Starter A three-point starter is commonly used to safely start DC shunt motors. Just like the two-point starter, it controls the high inrush of current when the motor is switched on. But this one comes with an added feature—overload and no-voltage protection, making it more reliable. What is a Three-Point Starter? The name “three-point” … Read more