Fluidization Engineering Questions and Answers – Minimum Fluidizing Velocity

This set of Fluidization Engineering online test focuses on “Minimum Fluidizing Velocity”.

1. Fluidization occurs when: Drag force by the upward moving gas ________
a) Weight of the particle
b) Weight of the fluid
c) Volume of the bed
d) Pressure drop across bed
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2. What is the range of Reynolds number(Re) for small particles in the fluidization bed?
a) Re < 20
b) Re > 20
c) 20 < Re > 1000
d) 20 > Re < 1000
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3. What is the range of Reynolds number(Re) for small particles in the fluidization bed?
a) Re < 20
b) Re > 20
c) Re > 1000
d) 20 > Re < 1000
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4. Fluidization expression is compared with which equation from fluid mechanics?
a) Euler’s equation
b) Bernoulli’s equation
c) Buoyancy equation
d) Navier–Stokes equation
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5. Minimum Fluidizing equation can be expressed in terms of which physical quantity?
a) Pressure drop
b) Temperature
c) Velocity
d) Volume
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6. What is the sphericity of sharp sand particles?
a) 0.67
b) 0.86
c) 0.63
d) 0.58
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7. What is the sphericity of round sand particles?
a) 0.67
b) 0.86
c) 0.63
d) 0.58
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8. What is the sphericity of anthracite coal particles?
a) 0.67
b) 0.86
c) 0.63
d) 0.58
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9. What is the sphericity of Fisher-catalyst particles?
a) 0.67
b) 0.86
c) 0.63
d) 0.58
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10. On comparison with Fluidized bed and Packed bed, which has the highest voidage?
a) Fluidized bed
b) Packed bed
c) Pressure drop
d) All of the mentioned
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Sanfoundry Global Education & Learning Series – Fluidization Engineering.

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