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Hydraulic and Fluid Machines - Interview Questions and Answers

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11. A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?
A. 900 minutes
B. 4 minutes
C. 4 x (225)3/2 minutes
D. 4 (225)1/3 minutes
E. 4 x V225 minutes.
Explanation:
12. Centre of pressure on an inclined plane is
A. at the centroid
B. above the centroid
C. below the centroid
D. at metacentre
E. at centre of pressure.
Explanation:
13. The property of a fluid which enables it to resist tensile stress is known as
A. compressibility
B. surface tension
C. cohesion
D. adhesion
E. viscosity.
Explanation:
14. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0. is 0.2 kg/cm", the pressure at a depth of 50 m below the oil surface will be
A. 2 metres of water column
B. 3 metres of water column
C. 5 metres of water column
D. 6 metres of water Column
E. 7 metres of water column.
Explanation:
15. Ratio of inertia force to elastic force is known as
A. Mach number
B. Froude number
C. Reynold's number
D. Weber's number
E. none of the above.
Explanation:
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