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MCQs

Total Questions : 94 | Page 2 of 10 pages
Question 11. _______ causes hoop tension in pipe shell.
  1.    Internal water pressure
  2.    External water pressure
  3.    Water hammer
  4.    Longitudinal stress
 Discuss Question
Answer: Option A. -> Internal water pressure
Answer: (a).Internal water pressure
Question 12. The water supply pipes are buried underground. The load on the buried pipe due to earth filling is given by ____________
  1.    W = C*Y*B
  2.    W = C*Y/B
  3.    W = C*Y*B²
  4.    W = C*Y²*B
 Discuss Question
Answer: Option C. -> W = C*Y*B²
Answer: (c).W = C*Y*B²
Question 13. Which of the following stress in pipe depends on temperature?
  1.    Internal water pressure
  2.    Stress due to foundation reaction
  3.    Longitudinal stress
  4.    Temperature stress
 Discuss Question
Answer: Option D. -> Temperature stress
Answer: (d).Temperature stress
Question 14. Pipe corrosion can be minimized by ____________
  1.    Removal of copper sulfate
  2.    Addition of calcium carbonate
  3.    Addition of carbon dioxide
  4.    Removal of dissolved oxygen
 Discuss Question
Answer: Option D. -> Removal of dissolved oxygen
Answer: (d).Removal of dissolved oxygen
Question 15. Which part of centrifugal well pumps prevents the back flow through the pump?
  1.    Delivery pipe
  2.    Foot valve
  3.    Strainer
  4.    Check valve
 Discuss Question
Answer: Option D. -> Check valve
Answer: (d).Check valve
Question 16. The plot of total dynamic head and discharge of a pump is called ____________
  1.    Dynamic head curve
  2.    System head curve
  3.    Pump curve
  4.    Discharge curve
 Discuss Question
Answer: Option B. -> System head curve
Answer: (b).System head curve
Question 17. The unit of specific speed is _____________
  1.    Metre/second
  2.    Metre/second²
  3.    Centimetre/second
  4.    Dimensionless
 Discuss Question
Answer: Option D. -> Dimensionless
Answer: (d).Dimensionless
Question 18. __________ is defined as the speed at which a pump will discharge a unit flow under a unit head at maximum efficiency.
  1.    Specific speed
  2.    Average speed
  3.    Maximum speed
  4.    Relative speed
 Discuss Question
Answer: Option A. -> Specific speed
Answer: (a).Specific speed
Question 19. The specific speed of the pump is 8000. What is the type of pump?
  1.    Reciprocating pump
  2.    Centrifugal pump
  3.    Mixed flow pump
  4.    Axial flow pump
 Discuss Question
Answer: Option D. -> Axial flow pump
Answer: (d).Axial flow pump
Question 20. _______ is the point of intersection of system head curve with the characteristic curve of the pump.
  1.    Discharge point
  2.    Operating point
  3.    Velocity head
  4.    Pumping point
 Discuss Question
Answer: Option B. -> Operating point
Answer: (b).Operating point

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