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Which of the following is NOT a type of positive displacement pumps?

Which of the following is NOT a type of positive displacement pumps? Correct Answer Centrifugal pump

Centrifugal pump is not a positive displacement pump. Reciprocating pumps move liquid by means of a constant back-and-forth motion of a piston, plunger, or diaphragm within a fixed volume or cylinder. Reciprocating pumps can handle viscous and abrasive fluids. They are low-speed machines when compared with centrifugal and rotary.

Related Questions

Consider the following advantages of rotary pumps compared to reciprocating pumps: 1. Steady discharge which increases with decrease in head 2. Suitable for handling fluids with suspended solid particles 3. Less bulky than positive displacement pumps 4. Can be started with open delivery with least load Which of the above advantages are correct?
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2 large and 1 small pumps can fill a water tank in 4 hours. 1 large and 3 small pumps can also fill the same water tank in 4 hours . How many hours will it take for 3 large 4 small pumps to fill the tank?
2 large and 1 small pumps can fill a water tank in 4 hours. One large and 3 small pumps can also fill the same water tank in 4 hours. how many hours will it take for 3 large and 4 small pumps to fill the tank?
The cost of manufacturing x water pumps is Tk.9000+400x. The amount received by selling these x water pumps is Tk. 500x. What is the least number of water pumps that must be manufactured and sold so that that the amount recieved is at least equal to the manufacturing cost ?