Related Questions

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?
A 2 hours
B 2.5 hours
C 3 hours
D 3.5 hours
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?
A 2 hours
B 2.5 hours
C 3 hours
D 3.5 hours
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 ?
A 50
B 60
C 90
D 100
If 18 pumps can raise 2170 tonnes of water in 10 days , working 7 hours a day ; in how many days will 16 pumps raise 1736 tonnes of water , working 9 hours a day ?
A 6
B 7
C 8
D 9
3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
A 9
B 10
C 11
D 12
3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
A 9
B 10
C 11
D 12
3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day ?
A 10
B 11
C 12
D 9
Reciprocating pumps compared to centrifugal pumps
A Deliver liquid at uniform pressure
B Can handle slurries more efficiently
C Are not subject to air binding
D Can be operated with delivery valve closed
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of
A High initial and maintenance cost
B Lower discharge
C Lower speed of operation
D Necessity of air vessel
__________ pumps are axial flow pumps.
A Turbine
B Propeller
C Diffuser
D None of these

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