A. 2
B. 4
C. 8
D. 5.5
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Related Mcqs:
- A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the new discharge will be __________ litres/minute ?
- A. 500 B. 200 C. 1000 D. 750...
- A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the power consumed now will be _____________ hp?
- A. 0.5 B. 2 C. 4 D. 1...
- A liquid is pumped at the rate of 600 litres using 1000 rpm. If the rpm is changed to 1100, the liquid pumped is _____________ litres?
- A. 600 B. 660 C. 1.1 D. 60...
- Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?
- A. D = 1840 H0.5/N B. D = 1840 N/H0.5 C. H = 1840 D0.5/N D. D = 1840 H/N...
- A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit E. to deliver water at a flow rate of 0.001 m3/s? The Fanning friction factor, f is 0.0062 ?
- A. 10 m B. 11 m C. 11.8 m D. 30 m...
- Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of ______________ flow type?
- A. Axial B. Radial C. Mixed D. None of these...
- A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now_________________?
- A. Increase B. Decrease C. Remain same D. Data insufficient to predict...
- The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the_________________?
- A. Discharge B. Suction C. Suction minus vapor pressure of the liquid at suction temperature D. Discharge minus vapor pressure of the liquid at the discharge temperature...
- Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?
- A. Increasing the impeller speed and the volute area B. Increasing the number of vanes in the impeller C. Mounting of two or more impellers in series on a single shaft D. Either of A., B. or C....
- The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost is P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet ?
- A. P, Q and R B. P and R C. R and S D. P, Rand S...
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