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
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
Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have
A Very low speeds
B Smaller discharge
C Higher capital &maintenance cost
D High vibrations
Centrifugal pumps as compared to reciprocating pumps
A Run at a lower speed for the same discharge
B Do not need priming
C Deliver fluid with pulsating/fluctuating discharge
D Can be run with discharge line valve closed for a short interval
A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and then 50 miles on the highway?
A 64
B 36
C 12
D 29
A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car average when it is driven 10 miles in the city and then 60 miles on the highway?
A 64
B 36
C 12
D 29
__________ pumps are axial flow pumps.
A Turbine
B Propeller
C Diffuser
D None of these

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