What is a RPM? All Questions › Category: Electrical Machines › What is a RPM? 0 Vote Up Vote Down chetan shidling asked 4 years ago I need short information 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago RPM means revolution per minute, the meaning of this is that how many times the motor or disk rotates per minute. Suppose motor or disk RPM is 50, then the motor or disk rotates 50 times per minute.