What is Power transmission in general words? The movement of energy from wherever it generated to an area wherever it’s applied to perform helpful work is power transmission. Whether or not it’s industrial appliances, farm instrumentality and business instrumentality all of them use power transmission systems to run their businesses. Motors drive systems and bearings are sub-systems of power transmission systems.
You may grasp that it comes from the facility lines out the front of your house, however you’ll not grasp the amount of complexness needed to urge this electricity to your house from such a protracted distance away. When power of a comparatively low voltage, like 240 volts, is shipped through terribly long wires, by the time the facility gets to the opposite finish, plenty of the energy is lost because it is reborn to heat within the wires.
Coupling- The device used for the transmission of power between 2 shafts that connect along at the ends is understood as Coupling. Couplings could also be divided into 2 categories- versatile couplings and rigid couplings.
Rigid coupling serves to draw 2 shafts along tightly in order that no relative motion will occur between them. Rigid couplings ought to be applied only if the alignment of the 2 shafts is maintained terribly accurately, not solely at the time of installation however additionally throughout operation of machines.
Flexible coupling serves to transmit torsion swimmingly whereas allowing some axial, radial and angular calumny. Commercially varied sorts of versatile couplings offered. Like gear coupling, Pin bush coupling and chain coupling.
Pulleys are employed in totally different of how for transmission of power, to raise hundreds and apply forces. Massive weights are upraised with convenience through the pulley-block system. A pulley-block may be a wheel on shaft that’s designed to support movement of a cable or rush along its circumference. In a very pulley-block system the upper the ratio is that the easier it’s to raise the actual objects meant for lifting. A pulley-block may be a mechanical device and it’s simple to use the pulley-block system. Despite that, thanks force of fiction the pulley-block system isn’t economical enough. For instance to raise an object to a height of 1 meter one has got to pull 2 meters of cable through the pulleys.
The power is generated at the facility plant at a comparatively low voltage. It’s then sent into terribly massive transformers and stepped up to a way higher voltage. These transformers are kind of like the plug packs or wall warts that we tend to use within the home to power several devices like laptops or battery chargers however they’re abundant larger.
This power is then sent on special, very large, high voltage power lines for terribly long distances, across the state and across the country. These varieties of power lines have vast steel frame towers, with multiple arms and therefore the wires area unit suspended terribly high within the air. They’ll typically be seen in less densely inhabited areas at the sting of cities or suburbs.