# Single Phase Transformer

##### Video Lessons & Revision Notes

An Ideal Transformer - 1
1. An Ideal Transformer - 1
In this 27 mins Video Lesson
What is a Transformer, Why do we need Transformers, Understanding an Ideal Transformer, Voltage Ratio in Ideal Transformer, Step Up and Step Down Transformer, Auto Transformer, EMF Equation, and other topics.
An Ideal Transformer - 2
2. An Ideal Transformer - 2
In this 14 mins Video Lesson
Current Ratio in an Ideal Transformer, Transformer - Circuit Symbol and Dot Notation, Power and Efficiency in an Ideal Transformer, Assumptions under Ideal Transformer, and other topics.
Practical Transformers
3. Practical Transformers
In this 35 mins Video Lesson
Understanding a Practical or a Real Transformer, Winding Resistance, Leakage Reactance, Magnetizing Reactance, Core Loss Resistance, Real Transformer under No Load, No Load Current, Wattful/ Active and Magnetizing/ Wattless Components, Phasor Diagram under no Load for a Practical Transformer, Practical Transformer On Load, Phasor Diagram of Practical Transformer On Load, and other topics.
Impedance Transformations in Transformers
4. Impedance Transformations in Transformers
In this 31 mins Video Lesson
Understanding Impedance Transformations, Reflecting Secondary Impedance to Primary, Reflecting Primary Impedance and Voltage Source to Secondary, Typical Problems, Equivalent Circuit of a Practical Transformer, and other topics.
Transformer Parameters - Rating, Efficiency and Regulation
5. Transformer Parameters - Rating, Efficiency and Regulation
In this 33 mins Video Lesson
Transformer Rating, Voltage Regulation for a Transformer, Efficiency of a Transformer, Losses in a Transformer, and other topics.
Typical Problems on Transformers and Conditions for Maximum Efficiency
6. Typical Problems on Transformers and Conditions for Maximum Efficiency
In this 35 mins Video Lesson
Problems on Transformer Parameters, Calculating Input Voltage, Calculating Voltage Regulation, Calculating Efficiency, Conditions for Maximum Efficiency of a Transformer, and other topics.
Transformer Open Circuit and Short Circuit Tests
7. Transformer Open Circuit and Short Circuit Tests
In this 29 mins Video Lesson
Open Circuit or No Load Test for a Transformer, Calculating Wattful and Magnetizing Current, Calculating Magnetizing Reactance and Core Loss Resistance, Calculating Iron Losses, Short Circuit or Impedance Test for a Transformer, Calculating Copper Losses, Calculating equivalent Winding Resistance and Leakage Reactance, Calculating Voltage Regulation, Calculating Efficiency, and other topics.
Typical Problems on Transformer Tests
8. Typical Problems on Transformer Tests
In this 18 mins Video Lesson
Understanding the Problem, Analysing Open Circuit Test Data, Analysing Short Circuit Test Data, Solving for Efficiency, Solving for Voltage Regulation, and other topics.

### Revision Notes

Transformers (5.08 Mb)

Construction, working principle, Emf equation, ideal and practical transformer, transformer on no load and on load, phasor diagrams, equivalent circuit, O.C. and S.C test, Efficiency.