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Hydraulic and Fluid Machines - Interview Questions and Answers

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46. Liquids
A. cannot be compressed
B. occupy definite volume
C. are not affected by change in pressure and temperature
D. re not viscous
E. none of the above.
Explanation:
47. An ideal flow of any fluid must satisfy
A. Pascal law
B. Newton's law of viscosity
C. boundary layer theory
D. continuity equation
E. Bernoulli's theorem.
Explanation:
48. The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow.
Explanation:
49. The flow in which each liquid particle has a definite path and their paths do not cross each other is called
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow.
Explanation:
50. The normal stress is same in all directions at a point in a fluid
A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
E. in case of an ideal fluid.
Explanation:
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