What are the pumps that operate by alternately filling a cavity and then displacing a given volume of liquid called?

Related MCQs

• End suction pumps are the common type of                    pumps.
•                  pumps produce a head and a flow by increasing the velocity of the liquid with the help of the rotating vane impeller.
• The water supply pipes are buried underground. The load on the buried pipe due to earth filling is given by                          
• What are the pumps with one or more impellers called?
• The two types of pumps behave very differently regarding pressure head and flow rate.
• Which reservoir is helpful in permitting the pumps or the water treatment plants to work at a uniform rate?
• Why are booster pumps used?
• Why are cryogenic pumps used?
• How many types of pumps are present?
• Submersible pumps require high maintenance.