Fluid Machines - Interview Questions | Exam2Win

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1. Centre of buoyancy always

A. coincides with the centre of gravity

B. coincides with the centroid of the volume of fluid displaced

C. remains above the centre of gravity

D. remains below the centre of gravity

Explanation:

2. The eddy viscosity for turbulent flow is

A. a function of temperature only

B. a physical property of the fluid.

C. dependent on the flow

D. independent of the flow

Explanation:

3. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

A. rise until its weight equals the buoyant force

B. tend to move downward and it may finally sink

C. float

D. none of the above

Explanation:

4. The viscosity of a gas

A. decreases with increase in temperature

B. increases with increase in temperature

C. is independent of temperature

D. is independent of pressure for very high pressure intensities

Explanation:

5. A floating body is said to be in a state of stable equilibrium

A. when its metacentric height is zero

B. when the metacentre is above the centre of gravity

C. when the metacentre is below the centre of gravity

D. only when its centre of gravity is below its centre of buoyancy

Explanation: