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MCQs

Total Questions : 94 | Page 3 of 10 pages
Question 21. The efficiency of the pump at half load is ____________
  1.    50%
  2.    70%
  3.    80%
  4.    100%
 Discuss Question
Answer: Option B. -> 70%
Answer: (b).70%
Question 22. When the pumps are in series operation?
  1.    H = H₁ + H₂
  2.    1/H = 1/H₁ +1/ H₂
  3.    Q = Q₁ + Q₂
  4.    1/Q = 1/Q₁ + 1/Q₂
 Discuss Question
Answer: Option A. -> H = H₁ + H₂
Answer: (a).H = H₁ + H₂
Question 23. When the pumps are in parallel operation?
  1.    H = H₁ + H₂
  2.    1/H = 1/H₁ +1/ H₂
  3.    Q = Q₁ + Q₂
  4.    1/Q = 1/Q₁ + 1/Q₂
 Discuss Question
Answer: Option C. -> Q = Q₁ + Q₂
Answer: (c).Q = Q₁ + Q₂
Question 24. Which of the following is not included in the friction head?
  1.    Head Loss in entire length of piping
  2.    Total static head
  3.    Head Loss in bend tees
  4.    Head Loss in valves
 Discuss Question
Answer: Option B. -> Total static head
Answer: (b).Total static head
Question 25. The efficiency of the pump at quarter load is ____________
  1.    50%
  2.    70%
  3.    80%
  4.    100%
 Discuss Question
Answer: Option A. -> 50%
Answer: (a).50%
Question 26. Which of the following is incorrect regarding cast iron pipes?
  1.    They are non corrosive
  2.    They are durable
  3.    They can be produced by centrifugal process
  4.    Their length varies from 80-100cm
 Discuss Question
Answer: Option D. -> Their length varies from 80-100cm
Answer: (d).Their length varies from 80-100cm
Question 27. The installed capacity of the pump does not depend on which of the following?
  1.    The maximum rate of hourly demand
  2.    Balancing storage
  3.    Power of pump
  4.    Operation schedule
 Discuss Question
Answer: Option C. -> Power of pump
Answer: (c).Power of pump
Question 28. If the diameter of pumping mains decreases, then the total dynamic head will increase.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 29. Horizontally cast iron pipes are called _________
  1.    Mcwane pipes
  2.    Pit cast pipes
  3.    Galvanized iron pipes
  4.    Wrought iron pipes
 Discuss Question
Answer: Option A. -> Mcwane pipes
Answer: (a).Mcwane pipes
Question 30. Mcwane pipes are ___ stronger in tension than Pit cast pipes.
  1.    20%
  2.    30%
  3.    50%
  4.    100%
 Discuss Question
Answer: Option D. -> 100%
Answer: (d).100%

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