D.C. Series Motor
It has high starting torque and variable speed range, therefore it is used for heavy-duty applications such as electric locomotives, steel rolling mills, hoists, lifts, cranes etc.
D.C. Shunt Motor
It has medium starting torque and a nearly constant speed, therefore, it is used for driving constant-speed drives such as lathes, vacuum cleaners, wood-working machines, laundry washing machines, elevators, conveyors, grinders and small printing presses etc.
Three-phase Synchronous Motor
It is constant speed motor for variable load, it is used for driving continuously- operating equipment at a constant speed such as ammonia and air compressors, motor-generator sets, continuous rolling mills, paper mills etc.
Squirrel Cage Induction Motor
This motor has simple and rugged construction and having high overload capacity. It has a nearly constant speed and poor starting torque. Hence, it is used for low and medium power drives where speed control is not required as for water pumps, tube wells, lathes, drills, grinders etc.
Double Squirrel Cage Motor
This motor has high starting torque and large overload capacity and a nearly constant speed. Hence, it is used for driving loads which require high starting torque such as compressor pumps, reciprocating pumps, large refrigerators, crushers, boring mills, textile machinery, cranes, punches, and lathes etc.
Slip-ring Induction Motor
It has high starting torque and large overload capacity. Its speed can be changed up to 50% of its normal speed. Hence, it is used for those industrial drives where the requirement of high starting torque and speed control for example- lifts, pumps, winding machines, printing presses, line shafts, elevators, and compressors etc.
Single-phase Series Motor
It has high starting torque and its speed can be controlled to a wide range. It is used for driving small domestic appliances like refrigerators and vacuum cleaners etc.
Repulsion Motor
It has high starting torque and is capable of wide speed control and it has high speed at high loads. Hence, it is used for drives which require large starting torque and adjustable but constant speed as in coil winding machines.
Capacitor-start Induction-run Motor
It has normally constant speed and high starting torque. Speed control is not possible. It is used in home appliances such as a compressor, water pump, refrigerator etc.
Capacitor-start-and-run Motor
Its operating characteristics are similar to the above motor except that it has better power factor and higher efficiency. Hence, it is used for drives requiring quiet operations.