Motor unit recruitment refers to the activation of additional motor units to accomplish an increase in contractile strength in a muscle.A motor unit consists of one motor neuron and all of the muscle fibers it stimulates.All muscles consist of a number of motor units and the fibers belonging to a motor unit are dispersed and intermingle amongst fibers of other units.otor unit recruitment refers to the activation of additional motor units to accomplish an increase in contractile strength in a muscle.
Permanent-magnet Starter Motor. Permanent magnet starters were introduced on the vehicles in the late 1980s. Less weight and small size are the two advantages of these motors, compared to conventional types. This causes the permanent magnet starter to be more popular as less space is available for engine electrical in modern cars. The reduction in weight also contributes towards reduction in fuel consumption.
Magnet Manufacturing Process. There are several processes for making magnets, but the most common method is called Powder Metallurgy. In this process, a suitable composition is pulverized into fine powder, compacted and heated to cause densification via âliquid phase sinteringâ. Therefore, these magnets are most often called sintered magnets. Ferrite, Samarium Cobalt (SmCo) and neodymium-iron-boron (neo) magnets are all made by this method. Unlike ferrite, which is a ceramic material, all of the rare earth magnets are metal alloys. How SmCo and Neo Magnets are MadeSuitable raw materials are melted under vacuum or inert gas in an induction melting furnace.