9. A flow in which the volume of a fluid and its density does not change during

Question

9. A flow in which the volume of a fluid and its density does not change during the flow is called flow. a. incompressible b.compressible 10. The weight per unit volume of a liquid at a standard temperature and pressure is called: a. specific weight b. mass density c. specific gravity d. None of the above 11. The Bernoulli's equation is based on the assumption that a. there is no loss of energy of the liquid flowing the velocity of flow is uniform across any cross-section of the pipe C. no force except gravity acts on the fluid d. all of the above 12. Laminar flow takes place at very low velocities. a. TRUE b. FALSE 13. The viscosity of water is than that of mercury. a. higher b. lower c. the same d. none of the above

Explanation / Answer

Ans 9 : a) incompressible

A flow in which the volume of a fluid and its density does not change during the flow is called incompressible flow.

The incompressible flow does not always imply that the fluid is incompressible too , because the fluid can be compressible. But if the volume and density of that fluid flowing does not change during its course , it is called as incompressible flow.

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