Steam and Gas Turbines Questions and Answers – Elementary Gas Dynamics

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Elementary Gas Dynamics”.

1. Continuous flow of fluid is called as _______
a) Continuum
b) Invincible flow
c) Continuum & Invincible flow
d) None of the mentioned
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2. Knudsen number does not have any __________
a) units & dimension
b) units
c) dimension
d) none of the mentioned
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3. Continuum in fluids is predicted by using ________
a) Knudsen number
b) Mach number
c) Knudsen & Mach number
d) None of the mentioned
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4. Ratio of mean free path to characteristic length is called as _________
a) Mach number
b) Knudsen number
c) Nusselt number
d) None of the mentioned
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5. Distance traveled by the molecule in between successive collisions is called as __________
a) mean free path
b) kinetic path
c) mean free path & kinetic path
d) none of the mentioned
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6. Knudsen number is less than _______
a) 1
b) 0.5
c) 0.3
d) none of the mentioned
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7. Continuum equations are valid only when Knudsen number is ________ than 0.3.
a) greater
b) less
c) equal
d) none of the mentioned
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8. When altitude of earth is in between 90 km and 150 km Knudsen number can be in between 0.3 and _________
a) 1
b) 2
c) 3
d) 4
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9. Knudsen number ranges in between 0.3 and 1 in ________
a) boundary & transient region
b) boundary region
c) transient region
d) none of the mentioned
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10. Kinetic theory of gasses are applicable only when Knudsen number is greater than 1.
a) True
b) False
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Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers.