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?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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, then the new head will be ______________ metres?

   A. 2
   B. 4
   C. 8
   D. 5.5

5. A fluid is pumped at the rate of 10 lb/sec to a height of 55 ft. The horse power required is _____________ hp?

   A. 1
   B. 10/55
   C. 5.5
   D. 1/55

6. A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be _______________ cms?

   A. 17
   B. 42
   C. 84
   D. 1.8

7. 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

8. Slurries can be most conveniently pumped by a _______________ pump?

   A. Screw
   B. Reciprocating
   C. Gear
   D. Centrifugal

9. Medium viscosity lubricating oil can be most ideally pumped by a ______________ pump?

   A. Vane
   B. Piston
   C. Centrifugal
   D. Plunger

10. When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an______________________?

    A. Ejector
    B. Blower
    C. Injector
    D. Airlift