When the rotor spins, the magnetic field is disturbed, and this, as a result, generates electricity. This creates a magnetic field around the coils. The magnets on the rotor are placed in such a way that they pass over the copper wire loops in the stator. Due to the rotation, a small amount of electricity is supplied to the rotor, which is conducted to the stator. The rotor is an electromagnet with two revolving metal slip rings and carbon brushes attached to its shaft. When the engine is ignited, the pulley moves and rotates the rotor shafts attached to the alternator. A serpentine belt that rests on a pulley is attached with an alternator. The functioning of an alternator is straightforward. All the components work jointly to monitor and regulate the power to match the energy needs of different components of the car’s engine. The rotor and stator are the central units for electricity generation, while the rectifier helps in converting AC to DC. The alternator comprises a cooling fan, voltage regulator, rotor, stator, diode bridge rectifier, slip rings, slip ring end bearings, carbon brushes, pulley. It changes the alternating current into a direct current and regulates the voltage to meet the required minimum power for each unit. The primary function of an alternator is to work jointly with the battery to supply energy to the electrical components, i.e., lights, fan, windshield wipers, etc. The alternator works by converting mechanical energy into electrical energy from alternating current to the direct current. It generates electricity and functions to provide electrical supply to cars and recharges the battery. An alternator is a maintenance-free yet the most important unit of the car’s engine.