Pressure Drop Calculations MCQ

Test your knowledge with important Pressure Drop Calculations MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Pressure Drop Calculations MCQs on Bissoy. Bissoy App

• A fully packed bed with small particle size has _________ pressure drop than a bed with larger particle size.
  ক

  More

  খ

  Less

  গ

  Same

  ঘ

  Negligible
• Which one of the following is the correct expression for Friction Factor in Packed Bed Columns?
  ক

  f = 150/Re

  খ

  f = 150/Re+1.75

  গ

  f = 180/Re+1.5

  ঘ

  f = 100/Re+0.0035
• What is the relation between superficial velocity and average fluid velocity in a packed bed?
  ক

  ϑ=φu

  খ

  ϑ=u/φ

  গ

  ϑ=φ0.14u

  ঘ

  ϑ=φ\(^\frac{\vartheta}{u}u\)
• If we have very small dp/di < 0.01, then we may use ____________
  ক

  Ergun Equation

  খ

  Kozeny Carman Equation

  গ

  Sieder Tate Equation

  ঘ

  Arrhenius Equation
• In the Ergun equation, what do you understand by the term X? f = ΔP/L X/ρ&vartheta;S2(∈3/(1-∈))
  ক

  Diameter of the tube

  খ

  Diameter of the pellets

  গ

  Effective diameter

  ঘ

  Equivalent diameter of the tube
• The Ergun equation is used to calculate the ___________
  ক

  Pressure drop in packed beds

  খ

  Reynolds number in packed columns

  গ

  Overall heat transfer coefficients

  ঘ

  Number of particles
• In the calculation of Reynold’s Number for the Friction factor of the shell, which is the correct formula for equivalent diameter De?
  ক

  \(\frac{4×(D_{oi}^2 – D_{io}^2)×\frac{π}{4}}{π(D_{io})}\)

  খ

  \(\frac{4×(D_{io}^2 – D_{oi}^2)×\frac{π}{4}}{π(D_{io})}\)

  গ

  Depends on the pitch

  ঘ

  \(\frac{4×(D_{io}^2 – D_{oi}^2)×\frac{π}{4}}{π(D_{io}+D_{oi})}\)
• If we desire to use a fluid with high pressure operation, we prefer to keep it in the tube side.
  ক

  True

  খ

  False
• We have a fluid of dirt factor 0.00035 which we want to use in our operation. During design calculations we find the dirt factor to be less than that of the fluid, we pass the setup for industrial use.
  ক

  True

  খ

  False
• We have a fluid of dirt factor 0.0035 which we want to use in our operation. Then during design considerations, we find that for our design the dirt factor is not applicable, this value of the dirt factor can be ________
  ক

  0.00035

  খ

  0.0035

  গ

  0.0045

  ঘ

  0.0055
• Our design dirt factor should be _____ the provided threshold dirt factor.
  ক

  Less than

  খ

  More than

  গ

  Equal to

  ঘ

  Much less than
• In the calculation of Reynold’s Number for the Friction factor of the annulus tube, which is the correct formula for equivalent diameter De?
  ক

  \(\frac{4×(D_{oi}^2 – D_{io}^2)×\frac{π}{4}}{π(D_{io})}\)

  খ

  \(\frac{4×(D_{io}^2 – D_{oi}^2)×\frac{π}{4}}{π(D_{io})}\)

  গ

  \(\frac{4×(D_{oi}^2 – D_{io}^2)×\frac{π}{4}}{π(D_{io}+D_{oi})}\)

  ঘ

  \(\frac{4×(D_{io}^2 – D_{oi}^2)×\frac{π}{4}}{π(D_{io}+D_{oi})}\)
• How many times do we calculate pressure drop for a double pipe heat exchanger?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• Which of the following has the maximum Pressure Drop for a Heat Exchanger?
  ক

  Counter-flow

  খ

  Parallel Flow

  গ

  Hairpins arrangement

  ঘ

  Split Flow
• If the pressure drop for an operation is more than the pressure assigned to the equipment, then the equipment is perfect to be used for that operation.
  ক

  True

  খ

  False