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Engineering :: Fluid Mechanics and Solid Handling


1.  A fluid is a substance that
A. Always sxpands until it fills any container B. is practically imcompressible
C. deforms continuously when subjected to a shear stress no matter how small that shear stress may be D. cannot be subjected to shear stress

2.  Newtons law of viscosity relates
A. pressure velocity and viscosity B. shear stress and rate of angular deformation in a fluid
C. temperature viscosity and velocity D. pressure temperature viscosity and rate of angular deformation in a fluid.

3.  Falling drops of rain acquire spherical shape on account of
A. temperature B. viscosity
C. compressibility D. surface tension

4.  A perfect gas
A. is incompressible B. has zero viscosity
C. cannot develop shear stresses D. has constant specific heats and satisfies PV = nRT.

5.  The bulk modulus of elasticity for a liquid
A. is independent of temperature B. increases with the pressure
C. has the dimensions of volume D. is independent of pressure.

6.  The bulk modulus of elasticity for a liquid has the units
A. kg/m3 B. N/m2
C. m3 D. N.

7.  The bulk modulus of elasticity for an incompressible fluid is
A. 0 B. ?
C. 1 D. equal to its density

8.  Viscosity has the dimensions
A. FL-2T-1 B. F-1L2T-1
C. FL-2T D. F-1L2T where dimensions M L and T are used for force length and time.

9.  Newtons law of viscosity states that for a given rate of angular deformation of fluid.
A. the shear stress is directly proportional to the viscosity B. the shear stress is inversely proportional to the viscosity
C. the shear stress is independent of the viscosity D. the shear stress is directly proportional to the square of viscosity

10.  The resistance of a fluid to shear depends
A. upon cohesion only B. upon its rate of transfer of molecular momentum only
C. upon its cohesion and rate of transfer of molecular momentum D. upon other factors than its cohesion and rate of transfer of moleular momentum.




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