1. Marie Zubatá 3. A

2.  Centrifugal pumps are a type pumps used to convey liquids or gases by the means of a rotating impeller, which increases the pressure of a fluid. The energy is transmitted to the fluid from the impeller driven by an electric or other type of a motor. If the shaft is placed vertically, we call them vertical centrifugal pumps. There are several most common applications of this type of pumps.

4.  Deep wells - vertical pumps are especially convenient to pump water from deep drilled wells to the surface  vertical pumps can be also used in wet pits  a special type of vertical pumps are submersible pumps.