Q.1
Which one of the following setup would have the following Temperature Profile?
Questionheat-transfer-operations-questions-answers1.jpg
  • a) Shell and tube with hot fluid in shell and packed bed in tube
  • b) Shell and tube with cold fluid in shell and packed bed in tube
  • c) Shell and tube with hot fluid in tube and packed bed in shell
  • d) Shell and tube with cold fluid in tube and packed bed in shell
Q.2
The particles are usually _______ packed near the wall of the tube.
Questionheat-transfer-operations-questions-answers2.jpg
  • a) Tightly
  • b) Loosely
  • c) Very tightly
  • d) Negligibly
Q.3
What is the heat transfer area for the following setup?
  • a) 0.357m2
  • b) 0.4m2
  • c) 0.377m2
  • d) 0.3m2
Q.4
When is the following equipment used?
Questionheat-transfer-operations-questions-answers4.jpg
  • a) Exothermic Reaction
  • b) Endothermic Reaction
  • c) Heating operation
  • d) Cooling operation
Q.5
The presence of particles makes the inside heat transfer coefficient higher than empty tube because the superficial velocity is _______ the actual velocity.
Questionheat-transfer-operations-questions-answers5.jpg
  • a) Little higher than
  • b) Very higher than
  • c) Very less than
  • d) Little less than
Q.6
The heat transfer coefficient ________ with increasing flow rate.
Questionheat-transfer-operations-questions-answers6.jpg
  • a) Increases
  • b) Decreases
  • c) Remains the same
  • d) Drops drastically
Q.7
In the expression given below, what is the expression Di? This given ratio defines voidage which is controlled to obtain maximum heat transfer coefficient.
  • a) Internal diameter of Pellets
  • b) Internal diameter of Tube
  • c) Internal diameter of Bed
  • d) Internal diameter of Pellets
Q.8
The value of dp/di in the range _______ gives maximum heat transfer coefficient.
  • a) 0.15-0.2
  • b) 2-3
  • c) 0.6-0.9
  • d) 0.001-0.002
Q.9
For very low dp/di, the temperature pattern is similar to that of complete mixing and turbulent flow.
  • a) True
  • b) False
Q.10
For very high dp/di, the mixing is very large and the heat transfer coefficient is ______
  • a) Low
  • b) Very low
  • c) High
  • d) Very high
Q.11
Which one is the correct temperature profile for high dp/di Packed bed setup?
  • a) Laminar temperature profile
  • b) Turbulent Temperature profile
  • c) Laminar near the walls and turbulent at the centre
  • d) Turbulent near the walls and laminar at the centre
Q.12
Which one is the correct temperature profile for very low dp/di packed bed setup?
  • a) Laminar temperature profile
  • b) Turbulent Temperature profile
  • c) Laminar near the walls and turbulent at the centre
  • d) Turbulent near the walls and laminar at the centre
Q.13
The renowned equation used to calculate the pressure drop in a non-ideal packed bed is known as______________
  • a) Sieder Tate Equation
  • b) Kozeny Carman Equation
  • c) Ergun Equation
  • d) Arrhenius Equation
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