electricity-today Knowledge

What is Alternating Current? Alternating current is a fundamental aspect of electrical systems that have shaped our world in countless ways. Its ability to be easily generated, converted to different voltages, and transmitted over long distances has made it the preferred choice for power transmissio

In hydroelectric power station the kinetic energy developed due to gravity in a falling water from higher to lower head is utilised to rotate a turbine to produce electricity. The potential energy stored in the water at upper water level will release as kinetic energy when it falls to the lower wate

We can generate electrical power by means of nuclear power. In nuclear power station , generates electrical power by nuclear reaction. Here, heavy radioactive elements such as Uranium (U 235 ) or Thorium (Th 232 ) are subjected to nuclear fission. This fission is done in a special apparatus called r

The main components of a gas turbine power plant are the compressor, regenerator, combustion chamber, gas turbine, alternator, and starting motor. Compressor Air compressor used in a gas turbine power plant is mainly of the rotary type. The air filter is attached at the inlet of the compressor where

The unit of electric power is watt, and hence unit of electrical energy is watt – second since energy is the product of power and time. The watt – seconds is referred as joules. One joule means the work required to be done for transferring one-ampere current in one second from one point to another p

Economics of Power Generation In all new engineering enterprises of this era, the question of cost is of utmost importance. It is the role played by an engineer to achieve the desired technical result, with minimum cost that distinguishes him from a non engineer who can also possibly attain the same

There are three kinds of expenditures involved in generating electricity. These are fixed cost, semi-fixed cost, running or operating cost. Fixed Cost of Electricity In every manufacturing unit there is some hidden expenditure which fixed. This is same for manufacturing one unit or thousand units of

Solar power plants are systems that use solar energy to generate electricity. They can be classified into two main types: photovoltaic (PV) power plants and concentrated solar power (CSP) plants. Photovoltaic power plants convert sunlight directly into electricity using solar cells , while concentra

A standalone solar PV system is a system that uses solar photovoltaic (PV) modules to generate electricity from sunlight and does not rely on the utility grid or any other source of electricity. A standalone solar PV system can provide power for various applications, such as lighting, water pumping,

The effect due to which light energy is converted to electric energy in certain semiconductor materials is known as photovoltaic effect . This directly converts light energy to electricity without any intermediate process. For demonstrating the photovoltaic effect let us assume a block of silicon cr

AC Induction motors offer enviable operational characteristics such as robustness, reliability and ease of control. They are extensively used in various applications ranging from industrial motion control systems to home appliances. However, the use of induction motors at its highest efficiency is a