Types Of Electric Drive Types of Electric Drive Electric drive can be classified into following categories: (i) Group drive (ii) Individual drive (iii) Multi motor drive. 1. Group Drive: This is also known as line shaft drive. A big size motor(main motor)drives a common shaft. Diagram of Group Drive To this shaft, numbers of small machines are connected. Thus a common shaft drives the small machines.The small machines are connected the common shaft by means of multi stepped pulleys as shown in below Figure. Advantages of group drive ✓ Single motor of big capacity is used so there is considerable saving in cost. ✓ Maintenance is less. ✓ Efficiency and power factor is better if the motor operates near rated capacity. ✓ If machines are overloaded, the group drive is advantageous because the overload occurring for main motor is very less. Disadvantages of group drive ✓ Any fault on main motors causes stopping of all small m