Add to ORKGThis thesis addresses analysis of problematics concerning induction motors. The introduction is dedicated to description of basic principles of induction motor functions, describes individual construction components and also focuses on brief description of current regular design of those machines. The following section is dedicated to the design method and procedure for calculating, mainly focused on single phase induction motor with connected capacitor. The last section is focused on problematics concerning induction motor efficiency together with possible methods of loss reduction and efficiency improvement following the example of engine design