A transformer that, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power.

A physical object that is intended to rotate within a fluid and to transform energy within a fluid into mechanical power.

A container intended for storage and/or processing of fluids.

Is a mechanical screening device used to separate materials by particle size through the use of a mesh screen and a vibrating motion.

A regulator designed to automatically maintain a constant voltage level.