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MCQs

Total Questions : 1628 | Page 6 of 163 pages
Question 51. Pick out the correct statement
  1.    Centre to centre distance between two consecutives rivets in a row is called the pitch
  2.    A rivetted joint made in overlapping plates is called butt joint
  3.    Hole size drilled in rivetted plates is less than the actual size of the rivet
  4.    None of these
 Discuss Question
Answer: Option A. -> Centre to centre distance between two consecutives rivets in a row is called the pitch
Question 52. Pick out the wrong statement:
  1.    The tensile strength of a brittle material is less than its compressive strength
  2.    The compressive strength of a ductile materia] is less than its tensile strength
  3.    In a thick cylindrical shell, the hoop stress is maximum at the inner radius
  4.    The value of crushing load is more than that of buckling load for long colmns
 Discuss Question
Answer: Option D. -> The value of crushing load is more than that of buckling load for long colmns
Question 53. Vertical storage vessels are never supported by __________ support.
  1.    Bracket
  2.    Saddle
  3.    Skirt
  4.    Lug
 Discuss Question
Answer: Option B. -> Saddle
Question 54. Which of the following material is seldom used for pressure vessel construction?
  1.    Rimmed still
  2.    Mild steel
  3.    Killed steel
  4.    Semi-killed steel
 Discuss Question
Answer: Option A. -> Rimmed still
Question 55. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?
  1.    Size, shape, orientation and surface of the packing particles
  2.    Density and viscosity of fluids
  3.    Fluid flow rates
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 56. Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is
  1.    pD/2t
  2.    pD/4t
  3.    pD/3t
  4.    pD/6t
 Discuss Question
Answer: Option A. -> pD/2t
Question 57. In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by
  1.    4(0.86p² - πd²/4)/πd
  2.    (p² - πd²/4)/πd
  3.    4(0.86p² - πd²)/πd
  4.    (4p² - πd²/4)/πd
 Discuss Question
Answer: Option A. -> 4(0.86p² - πd²/4)/πd
Question 58. Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid
  1.    Containing suspended solids flows at low velocity
  2.    Containing suspended solids flows at high velocity
  3.    Is highly viscous
  4.    Is of high specific gravity
 Discuss Question
Answer: Option A. -> Containing suspended solids flows at low velocity
Question 59. For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is
  1.    D1/(d1 + d2)
  2.    D2/(d1 + d2)
  3.    (d1 + d2)/d1
  4.    (d1 + d2)/d2
 Discuss Question
Answer: Option A. -> D1/(d1 + d2)
Question 60. Which of the following is used to set the diameter of the distillation column?
  1.    Number of theorectical plates
  2.    Static submergence
  3.    Allowable vapour velocity
  4.    Length of straight rectangular weir on cross-flow tray
 Discuss Question
Answer: Option C. -> Allowable vapour velocity

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