Usually refers to a motor less than 1 horse power.
The type of bearing that would be fitted to a fractional kW electric motor will depend on the model and maker of the motor. Deep grove ball bearings are the most common bearings used.
The electric motor changes electric energy into mechanical energy.
I think you mean kW, not kwh. Fractional just means less than one.
The term is 'fractional', not 'frictional'! A 'fractional kilowatt' motor is simply one with a rating below one kilowatt. In North America, the equivalent term is 'fractional horsepower', meaning 'less than one horsepower'.
Tachogenerators are AC or DC generators that output a voltage in proportion to the rotational speed of a shaft on a rotating electrical machine (electric motor), and thus are used to measure the speed and direction of rotation.Most commonly found in fractional horsepower (FHP) applications they are often referred to as 'sensors', most electric motor manufacturers offer a tachogenerator on DC commutated (brushed/permanent magnet) motor types.
electric energy to mechanical energy
Because that is the purpose on an electric motor.
Electric motor.
Electric energy is converted into motion through an electric motor. The electric motor uses electromagnetism to create a magnetic field that interacts with electrical currents, producing a rotational motion. This motion can then be used to power various devices and machinery.
An electric motor converts electrical energy to kinetic energy.
An electric motor can power anything that needs mechanical torque.
An electric motor converts electrical energy to kinetic energy.