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MCQs

Total Questions : 3218 | Page 7 of 322 pages
Question 61. Velocity at a certain point in case of streamline flow is
  1.    Constant
  2.    Independent of time
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option C. -> Both A & B
Question 62. Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m³, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is
  1.    90
  2.    60
  3.    45
  4.    30
 Discuss Question
Answer: Option B. -> 60
Question 63. In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant?
  1.    Rotational
  2.    Unsteady
  3.    Turbulent
  4.    Non-uniform
 Discuss Question
Answer: Option D. -> Non-uniform
Question 64. Which of the following pipe bends will incur the largest head loss ?
  1.    U-bend
  2.    30° bend
  3.    45° bend
  4.    90° bend
 Discuss Question
Answer: Option A. -> U-bend
Question 65. If the head over the triangular notch is doubled, the discharge will increase by __________ times.
  1.    2
  2.    2.828
  3.    5.657
  4.    4
 Discuss Question
Answer: Option C. -> 5.657
Question 66. The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.
  1.    Bingham
  2.    Newtonion
  3.    Perfect
  4.    None of these
 Discuss Question
Answer: Option B. -> Newtonion
Question 67. The distance between metacentre and __________ is called metacentric height.
  1.    Water surface
  2.    Centre of gravity
  3.    Centre of buoyancy
  4.    None of these
 Discuss Question
Answer: Option B. -> Centre of gravity
Question 68. The __________ pressure is measured by a static tube.
  1.    Dynamic
  2.    Static
  3.    Total
  4.    None of these
 Discuss Question
Answer: Option B. -> Static
Question 69. Boiler feed water pump is usually a __________ pump.
  1.    Reciprocating
  2.    Gear
  3.    Multistage centrifugal
  4.    Diaphragm
 Discuss Question
Answer: Option C. -> Multistage centrifugal
Question 70. Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
  1.    Q/2
  2.    Q/4
  3.    Q/8
  4.    Q/16
 Discuss Question
Answer: Option D. -> Q/16

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