In the case of the motor it is the rotor and the stator and for the pump it is the impeller and the volute (or diffuser). Of course the friction produced by bearings and other mechanical components (seals, stuffing box, etc) also affect pump efficiency, but the impeller and volute have the greatest influence. Lets start our investigation of centrifugal pump efficiency with the impeller.
The differences are minor: 1  A blazer refers to a sportcoat that is made of navy wool, with brass buttons. 2  A suit jacket is the jacket part of a suit. 3  A sport coat is a jacket, cut like a suit jacket or blazer, that doesn't have an accompanying pair of pants - it's a standalone jacket.
Difference Between Hoodie and Sweatshirt. Sweatshirts and hoodies are contemporary garments worn by many people no matter the age, sex, or other distinguishable characteristic. Nowadays, they are considered as utilitarian garments and can be worn for almost every activity.