Electrical engineering

Definition: A transformer is a static electromagnetic energy conversion device, that transfers electrical energy from one circuit to another circuit without change in frequency. An induction motor is a electromechanical energy conversion device, that converts electrical energy into mechanical energy. Difference Between a Transformer and an Induction Motor In general, an induction motor is a rotating transformer with primary winding connected to supply mains and the secondary winding terminals are shorted. However, the difference between a transformer and an induction motor are mentioned below: Transformer is a static machine whereas an induction motor is a rotating machine. Transformer is an electromagnetic energy conversion machine wheras an induction motor is an electromechanical energy conversion machine. Transformer is a constant frequency device wheras in an induction motor the stator is at supply frequency(f) but rotor is at frequency "s*f", where "s" is cal...

Definition: The transformer is an electromagnetic energy conversion device, that transfers electrical energy from one circuit to another circuit without any change in frequency.  During this process of energy transfer, the energy is being converted from electrical to magnetic and back again to electrical energy. The part of the transformer that receives electrical energy from supply mains is known as a primary winding and the part that delivers electrical energy to the load is known as the secondary winding. Single phase transformer The primary and secondary windings of the transformer are not electrically connected but are magnetically coupled. Thus, the electrical energy received by the primary winding is first converted into magnetic energy and then it is converted back into electrical energy in the secondary winding. Working Principle of transformer: The basic working principle of a transformer is "faraday's law of electromagnetic induction" .      According to f...

This posts will provide you MCQ's on power system chapter-1 Generation. This MCQ's will help you to clear various state electricity board exams and also helps in interviews. Power system is a subject that deals with the generation, transmission, distribution and the utilization of electrical energy. For an electrical engineer, it is a very important and core subject. MCQs on Power Systems Chapter-1 Generation 1) Which is not a non conventional energy sources? Solar Diesel Biomass Hydro 2) Which type of generator are used for non renewable power generation? DC generator Induction generator Synchronous generator All of the above 3) A generating station which converts heat energy from the combustion of coal into electrical energy is known as _________? Steam power station. Nuclear power station Geothermal power station Biomass power station 4) Which power stations comes under the category of peak load plants? Nuclear power plant Hydro power plant Wind power plant Solar power plant...

Definition: A power system can be defined as a system that deals with the principles of generation, transmission, distribution, and utilization of electrical energy. The single line diagram of a power system network is as shown below Generally, most of the time the power system network operates in normal conditions i.e the electrical quantities like voltage, current, and frequency are within the specified limits. But sometimes the network may experience some abnormal conditions in the electrical quantities due to the occurrence of faults. Now, we cannot stop the occurrence of these faults since the overhead lines are exposed to atmospheric conditions.  Classifications of faults The electrical faults are generally classified as: Open circuit faults Short circuit faults However, they are further classified as: Open circuit faults occur in series with lines so they are generally called series faults. these faults occur due to the melting of conductors, snatching of conductors du...