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MCQs

Total Questions : 304 | Page 6 of 31 pages
Question 51. A jet of water enters and leaves a fixed curved vane tangentially. The force of jet along perpendicular to the vane is zero.
  1.    True
  2.    False
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 52. A Pelton wheel is
  1.    tangential flow impulse turbine
  2.    inward flow impulse turbine
  3.    outward flow impulse turbine
  4.    inward flow reaction turbine
 Discuss Question
Answer: Option A. -> tangential flow impulse turbine
Answer: (a).tangential flow impulse turbine
Question 53. In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct
Question 54. The discharge through a reaction turbine __________ with the increase in unit speed.
  1.    remains same
  2.    increases
  3.    decreases
  4.    None of these
 Discuss Question
Answer: Option C. -> decreases
Answer: (c).decreases
Question 55. In a mixed flow reaction turbine, the flow of water is partly radial and partly axial.
  1.    Correct
  2.    Incorrect
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Correct
Answer: (a).Correct
Question 56. A Pelton wheel with one nozzle is preferred for a specific speed between 35 to 60 r.p.m.
  1.    True
  2.    False
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 57. If the Francis turbine is run below 50 percent head for a long period, it will not only lose its efficiency but also the cavitation danger will become more serious.
  1.    Agree
  2.    Disagree
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Agree
Answer: (a).Agree
Question 58. The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.
  1.    Yes
  2.    No
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Yes
Answer: (a).Yes
Question 59. By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
  1.    39.2%
  2.    48, 8%
  3.    84.8%
  4.    88.4%
 Discuss Question
Answer: Option C. -> 84.8%
Answer: (c).84.8%
Question 60. Which of the following pump is generally used to pump highly viscous fluid?
  1.    Centrifugal pump
  2.    Reciprocating pump
  3.    Air lift pump
  4.    Screw pump
 Discuss Question
Answer: Option D. -> Screw pump
Answer: (d).Screw pump

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