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 … Read more
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 … Read more
Dry Type Transformers: Types and Applications
What is a Dry Type Transformer? A dry-type transformer does not use any liquid for its cooling and insulation. An oil-filled transformer uses mineral insulating … Read more
Difference between Harmonics and Sub-Harmonics
Harmonics is generated when the equipment draws current which is non linear to the applied voltage. The elctronic devices are the non linear devices … Read more
Eddy Current Theory and Applications
What is Eddy Current? According to Faraday’s and Lenz’s law, when varying magnetic field is subjected to a conducting loop, emf of different magnitude is … Read more
Advantages and Disadvantages of Induction Motor
There are some of the advantages of induction motors compared to DC motors and synchronous motors. We will also discuss disadvantages of induction motors compared to … Read more
Resistance and Leakage Reactance or Impedance of Transformer
Leakage Reactance of Transformer The flux generated in the primary winding of the transformer gets linked with both the primary and secondary winding. However, all … Read more
Single Phase Half Wave Rectifier- Circuit Diagram, Theory & Applications
A Single phase half wave rectifier converts AC voltage to DC voltage. It requires only one diode for rectification. What is Rectifier? The rectifier is … Read more
Advantages of Parallel Operation of Transformers
Parallel operations of transformer: Definition-Connection of the primary winding of two transformers to a common supply voltage and connection of the secondary winding of both … Read more
Maximum Power Transfer Theorem | Proof,Formula
Maximum power transfer theorem is a tool for determining the condition of maximum power transfer. The maximum power transfer theorem states that the source can … Read more