78. A fluid Particle may possess the displacement of
A. translation
B. rotation
C. distortion
D. all the above.

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79.  In two dimensional flow the components of velocity are given by u = ax ; u = by. The stream lines will be
A. circular
B. parabolic
C. hyperbolic
D. elliptical.

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80. In a two dimensional flow if the components of the velocity are u = ax ; u = by, the point where no motion occurs, is known as
A. critical point
B. neutral point
C. stagnation point
D. stationary point

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81.  The property of steam function iv is :
A. w is constant everwhere on any stream line
B. the flow around any path in the fluid is zero for continuous flow
C. the rate of change of w with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction
D. all the above.

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82.  In a fluid flow a particle may posses
A. elevation energy
B. kinetic energy
C. pressure energy
D. all the above.

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83.  An independent mass of a fluid does not posses
A. elevation energy
B. kinetic energy
C. pressure energy
D. none of these.

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84. Frictional loss of head includes the loss of energy due to
A. viscosity
B. turbulence
C. both (a) and (b)
D. none of these.

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