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MCQs

Total Questions : 3147 | Page 6 of 315 pages
Question 51. An average value of coefficient of velocity is
  1.    0.62
  2.    0.76
  3.    0.84
  4.    0.97
 Discuss Question
Answer: Option D. -> 0.97
Question 52. A flow through a long pipe at constant rate is called
  1.    Steady uniform flow
  2.    Steady non-uniform flow
  3.    Unsteady uniform flow
  4.    Unsteady non-uniform flow
 Discuss Question
Answer: Option A. -> Steady uniform flow
Question 53. Head developed by a centrifugal pump is
  1.    Proportional to diameter of impeller
  2.    Proportional to speed of impeller
  3.    Proportional to diameter and speed of impeller
  4.    None of the above
 Discuss Question
Answer: Option C. -> Proportional to diameter and speed of impeller
Question 54. A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
  1.    Coincides with
  2.    Lies below
  3.    Lies above
  4.    None of these
 Discuss Question
Answer: Option B. -> Lies below
Question 55. Discharge of a centrifugal pump is
  1.    Directly proportional to diameter of its impeller
  2.    Inversely proportional to diameter of its impeller
  3.    Directly proportional to (diameter)² of its impeller
  4.    Inversely proportional to (diameter)² of its impeller
 Discuss Question
Answer: Option D. -> Inversely proportional to (diameter)² of its impeller
Question 56. Delivery head of a centrifugal pump is
  1.    Directly proportional to N
  2.    Inversely proportional to N
  3.    Directly proportional to N²
  4.    Inversely proportional to N²
 Discuss Question
Answer: Option C. -> Directly proportional to N²
Question 57. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as
  1.    Meta center
  2.    Center of pressure
  3.    Center of buoyancy
  4.    Center of gravity
 Discuss Question
Answer: Option B. -> Center of pressure
Question 58. The flow in a pipe or channel is said to be uniform when
  1.    The liquid particles at all sections have the same velocities
  2.    The liquid particles at different sections have different velocities
  3.    The quantity of liquid flowing per second is constant
  4.    Each liquid particle has a definite path
 Discuss Question
Answer: Option A. -> The liquid particles at all sections have the same velocities
Question 59. Euler's number is the ratio of __________ force to pressure force.
  1.    Inertia
  2.    Gravity
  3.    Viscous
  4.    None of these
 Discuss Question
Answer: Option A. -> Inertia
Question 60. The property of fluid by virtue of which it offers resistance to shear is called
  1.    Surface tension
  2.    Adhesion
  3.    Adhesion
  4.    Viscosity
 Discuss Question
Answer: Option D. -> Viscosity

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