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Fluid Machines - Interview Questions and Answers

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16. The horizontal component of force on a curved surface is equal to the
A. product of pressure intensity at its centroid and area
B. force on a vertical projection of the curved surface
C. weight of liquid vertically above the curved surface
D. force on the horizontal projection of the curved surface
Explanation:
17. A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is
A. zero
B. one-fourth its value when cylinder was full
C. one-half its value when cylinder was full
D. cannot be predicted from the given data
Explanation:
18. The pressure at the summit of a syphon is
A. equal to atmospheric
B. less than atmospheric
C. more than atmospheric
D. none of the above
Explanation:
19. If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is
A. 1
B. 4/3
C. 2
D. 4
Explanation:
20. The discharge through a V- notch varies as
A. H1/2
B. H3'2
C. H5/2
D. H5'4 where H is head.
Explanation:
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