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

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

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

24. A perfect gas has......

   A.Constant viscosity

   B.Has zero viscosity

   C.Is incompressible

   D.None of the above

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

   A.Cohesion

   B.Adhesion

   C.Viscosity

   D.Surface tension

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