Fluidization Engineering Questions and Answers – Entrainment at or Above the TDH-Size Distribution of Solids

This set of Fluidization Engineering Questions and Answers for Entrance exams focuses on “Entrainment at or Above the TDH-Size Distribution of Solids”.

1. From above figure, what is the diameter of particles with respect to ‘A'(Hint: Glass sphere)?
a) 0.051 mm
b) 0.074 mm
c) 0.094 mm
d) 0.162 mm
View Answer

Answer: a
Explanation: Smaller the particles size, early entrainment will take place.

2. From above figure, what is the diameter of particles with respect to ‘B'(Hint: Glass sphere)?
a) 0.051 mm
b) 0.074 mm
c) 0.094 mm
d) 0.162 mm
View Answer

Answer: b
Explanation: Medium particles size, at moderate time the entrainment will take place.

3. From above figure, what is the diameter of particles with respect to ‘C'(Hint: Glass sphere)?
a) 0.051 mm
b) 0.074 mm
c) 0.094 mm
d) 0.162 mm
View Answer

Answer: c
Explanation: Larger the particles size, lately the entrainment will take place.
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4. From above figure, what is the diameter of particles with respect to ‘E'(Hint: Catalyst)?
a) 0.051 mm
b) 0.074 mm
c) 0.094 mm
d) 0.162 mm
View Answer

Answer: d
Explanation: Larger the particles size, lately entrainment will take place.

5. From above figure, how increase in pressure is affecting the velocity of solid particles?
a) Decreases
b) Increases
c) No change
d) Fluctuating
View Answer

Answer: a
Explanation: From experimental data provided.
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6. From above figure, how decrease in pressure is affecting the velocity of solid particles?
a) Decreases
b) Increases
c) No change
d) Fluctuating
View Answer

Answer: b
Explanation: From experimental data provided.

7. Based on which property the solids get separated while elutrition?
a) Size
b) Shape
c) Density
d) All of the mentioned
View Answer

Answer: d
Explanation: Various factors are responsible for elutrition to take place.
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8. How does the introduction of internals in the bed help in elutrition?
a) Separate big size particles
b) Separate small size particles
c) Breaks large particles
d) None of the mentioned
View Answer

Answer: c
Explanation: Prevents larger particles by forming an obstruction and breaking them.

9. For particles to not reach the TDH, what is the condition required?
a) Ut<Uo
b) Ut>Uo
c) Ut=Uo
d) Ut<=Uo
View Answer

Answer: b
Explanation: Velocity at which it just reaches the bottom of TDH.
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10. Total entrainment rate= SUM(entrainment rate of particle size*fraction of that size in bed) , true or false?
a) True
b) False
View Answer

Answer: a
Explanation: Derived from theoretical knowledge and applying maths.

Sanfoundry Global Education & Learning Series – Fluidization Engineering.

To practice all areas of Fluidization Engineering for Entrance exams, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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