Hydraulics and Fluid Machines - Hydraulics and Fluid Machines objective type questions and answers


21. The stress strain relation of a Newtoneon fluid is.......


   A.Linear

   B.Parabolic

   C.Hyperbolic

   D.Inverse type


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A.Linear

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22. The increase of temperature results in .......


   A.Increase in viscosity of gas

   B.Increase in viscosity of liquid

   C.Decrease in viscosity of gas

   D.Decrease in viscosity of liquid


✔ View Answer


D.Decrease in viscosity of liquid

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23. Balloon lifting in air follows the following principles.........


   A.Law of gravitation

   B.Archimedes principle

   C.Principle of buoyancy

   D.All of the above


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D.All of the above

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24. A perfect gas has......


   A.Constant viscosity

   B.Has zero viscosity

   C.Is incompressible

   D.None of the above


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D.None of the above

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25. The tendency of a liquid surface to contract is due to the following property.......


   A.Cohesion

   B.Adhesion

   C.Viscosity

   D.Surface tension


✔ View Answer


D.Surface tension

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