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MCQs

Total Questions : 1628 | Page 159 of 163 pages
Question 1581. For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by
  1.    Di, opt = 7.6 Q0.36 . ρ0.9
  2.    Di, opt = 3.9 Q0.45 . ρ0.23
  3.    Di, opt = 3 Q0.36 . ρ1.86 μ0.08
  4.    Di, opt = 3 Q0.36 ρ0.18
 Discuss Question
Answer: Option D. -> Di, opt = 3 Q0.36 ρ0.18
Question 1582. Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.
  1.    20
  2.    10
  3.    5
  4.    30
 Discuss Question
Answer: Option D. -> 30
Question 1583. Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around
  1.    2.5"
  2.    50% of the plate spacing
  3.    5"
  4.    0.5"
 Discuss Question
Answer: Option D. -> 0.5"
Question 1584. Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of
  1.    Making the joint leak proof
  2.    Reduction of discontinuity in shape at the junction
  3.    None of these
  4.    Preventing the local overstressing of the shell around the opening
 Discuss Question
Answer: Option D. -> Preventing the local overstressing of the shell around the opening
Question 1585. Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.
  1.    45
  2.    85
  3.    20
  4.    30
 Discuss Question
Answer: Option A. -> 45
Question 1586. Bracket supports are the most suitable for supporting __________ vessels.
  1.    None of these
  2.    Thick walled vertical
  3.    Horizontal
  4.    Thin shperical (e.g. Horton sphere)
 Discuss Question
Answer: Option B. -> Thick walled vertical
Question 1587. The LMTD correction factor (FT) is defined as the
  1.    Ratio of LMTD to the true temperature difference
  2.    Ratio of true temperature difference to the LMTD
  3.    Geometric mean of the true temperature difference and the LMTD
  4.    Differenced of true temperature difference and the LMTD
 Discuss Question
Answer: Option B. -> Ratio of true temperature difference to the LMTD
Question 1588. Skirt support is the most suitable for supporting __________ vessels.
  1.    Thick walled
  2.    Small horizontal
  3.    Large horizontal
  4.    Tall vertical
 Discuss Question
Answer: Option D. -> Tall vertical
Question 1589. The distance between the centre of a rivet hole to the nearest edge of the plate is called
  1.    Margin
  2.    None of these
  3.    Back pitch
  4.    Pitch
 Discuss Question
Answer: Option A. -> Margin
Question 1590. Saddle supports are used for supporting __________ vessels.
  1.    Thick spherical
  2.    Horizontal cylinderical
  3.    Tall vertical
  4.    Thick walled vertical
 Discuss Question
Answer: Option B. -> Horizontal cylinderical

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