What is the disadvantage of large exciting current in a transformer?
What is Exciting current? The exciting current in the transformer produces the magnetic flux in the core. When energizing transformer at no load, transformer draws … Read more
An electrical machine converts mechanical energy into electrical energy or vice versa. The transformer is also an electrical machine which transform the voltage without changing the frequency. We will discuss about the;
What is Exciting current? The exciting current in the transformer produces the magnetic flux in the core. When energizing transformer at no load, transformer draws … Read more
The no-load current of a transformer is the vector sum of the exciting current and core loss current of the transformer. Why Losses in a … Read more
The induction motor can’t run at synchronous speed because it is not possible to run the motor without load. Even the motor is at no … Read more
When the stator of the induction motor is fed three phase supply, the synchronous rotating field is generated. The flux generated in the stator gets … Read more
We shall understand with an example how the resistance of a wire changes with stretching its length. Example-1 –Change of Electrical Resistance with wire stretching … Read more
The metering class current transformer is used for metering the energy for revenue purposes. Therefore, the metering class current transformer must be as accurate as … Read more
In many applications, we use a single VFD for multiple motors. In this method, more than one motor is connected to a single VFD drive. … Read more
What is accuracy limit factor(ALF) of CT? Let us first understand what is the accuracy limit factor of the current transformer. There are three types … Read more
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 … Read more
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