Answer to: A step-up transformer used on a 120 V line has 95 turns on the primary and 2850 turns on the secondary. What is the emf across the...
We have the equation of current through an inductor as,We can split integration limits into two intervals as and . we know that is the instant just before switching action takes place, while is the instant just after switching action takes place. Hence, we can writeTherefore,...
Now if an alternating source voltage V1is applied in the primary winding of that ideal transformer, there will be a counter self emf E1induced in the primary winding which is purely 180oin phase opposition with supply voltage V1. To develop the counter EMF (E1) across the primary winding, ...
An electric motor is tested and found 76% efficient. if the input work is 400 J, what is the motors output work? Describe how a motor works. Explain the difference between energy and power. How they are related to work? What's the definition and equation of the power generated by...
In a modern power system, electrical energy from the generating station is delivered to… Effects of Voltage and Frequency Variation on Transformers The effects of voltage and frequency variation on the transformer is discussed in this article.…...
Faraday’s law can be described as a single equation that describes two different phenomena: first, the motional emf that is generated by a magnetic force on a moving wire, and second is the transformer emf that is generated by an electric force due to a changing magnetic field. ...
An ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. At the factory a step-down transformer reduces the voltage from its (rms) transmission value V... Q: A regression model of the form Show that For the data set Find the regression...
Applications of Eddy Currents Mathematical Expression for Eddy Current Loss Applications of Eddy Currents As you know that by the effect of Eddy Current the heat which is produced is not utilized for any useful work as they are a major source of energy loss in AC machines like transformer, gen...
The application of electromagnetics has been in practice for more than a century: In 1831, English chemist and physicist Michael Faraday invented the transformer, although he called it an induction coil. Unfortunately, engineering schools rarely provide instruction in practical ...
A workflow chart, or diagram, is a visual representation of the different steps in a business process. Define a workflow diagram through an example, explore why these tools are created, see how information is gathered to design a workflow diagram, and learn what to do once a diagram is comp...