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Hydraulic and Fluid Machines - Interview Questions and Answers

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71. A streamline is defined as the line
A. parallel to central axis flow
B. parallel to outer surface of pipe
C. of equal yelocity in a flow
D. along which the pressure drop is uniform
E. which occurs in all flows.
Explanation:
72. The region between the separation streamline and the boundary surface of the solid body is known as
A. wake
B. drag
C. lift
D. boundary layer
E. aerofoil section.
Explanation:
73. The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream
A. keeps on increasing
B. keeps on decreasing
C. remains constant
D. may increase/decrease
E. unpredictable.
Explanation:
74. Normal depth in open channel flow is the depth of flow corresponding to
A. steady flow
B. unsteady flow
C. laminar flow
D. uniform flow
E. critical flow.
Explanation:
75. The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to
A. 1 Pa
B. 91Pa
C. 9 Pa
D. 90 Pa
E. 9100 Pa.
Explanation:
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