The maximum delivery pressure of a reciprocating compressor may be about ______________ kg/cm2?

Related Mcqs:

1. 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

2. For very low pressure and high discharge rate, the compressor used is a/an ______________ compressor?

   A. Axial
   B. Reciprocating
   C. Rotary
   D. None of these

3. A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a ____________ pump?

   A. Sump
   B. Volute
   C. Vacuum
   D. Submerged

4. The maximum delivery pressure of compressors can be upto _____________ atmospheres?

   A. 10
   B. 100
   C. 250
   D. 1000

5. What is the maximum theoretical suction lift (metres) of a reciprocating pump ?

   A. 5
   B. 10
   C. 50
   D. 100

6. A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double___________________?

   A. Head
   B. Discharge
   C. Efficiency
   D. None of these

7. _____________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2?

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

8. Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will _____________ the gas discharge pressure?

   A. Increase
   B. Decrease
   C. Not change
   D. Exponentially decrease

9. The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which “sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis”. The centre of pressure of a rectangular surface (of width ‘w’) immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid) ?

   A. 1/(y/3)
   B. 2y/3
   C. 1/(y/4)
   D. 3y/4

10. Air vessel provided in a reciprocating pump__________________?

    A. Smoothens the flow by avoiding pulsations
    B. Increases the volumetric efficiency of the pump
    C. Saves the pump from the danger of cavitation
    D. None of these