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Hydraulic and Fluid Machines - Interview Questions and Answers

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126. A pressure of 25 m of head of water is equal to
A. 25 kN/m2
B. 245 kN/m2
C. 2500 kN/m2
D. 2.5kN/m2
E. 12.5 kN/m2.
Explanation:
127. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are
A. less
B. more
C. equal
D. less at low temperature and more at high temperature
E. there is no such criterion.
Explanation:
128. If 0 kg liquid occupies volume of one cubic meter, men 0. represents its
A. specific weight
B. specific mass
C. specific gravity
D. specific density
E. none of the above.
Explanation:
129. The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to
A. Buoyancy
B. Equilibrium of a floating body
C. Archimedes' principle
D. Bernoulli's theorem
E. Metacentric principle.
Explanation:
130. When the flow parameters at any given instant remain same at every point, then flow is said to be
A. quasi static
B. steady state
C. laminar
D. uniform
E. static.
Explanation:
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