Resultant pressure of the liquid in the case of an immersed body acts through____________________?

Question: In case of a pipe exit fitted with a nozzle, the
[A].

conversion of kinetic head to pressure head is facilitated.

[B].

conversion of pressure head to kinetic head is facilitated.

[C].

power transmitted through the nozzle is maximum, when the head lost due to friction in the pipe is equal to one third of the total supply head.

[D].

both (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: With increasing flow rate, the hydraulic efficiency of a centrifugal pump
[A].

monotonically decreases.

[B].

decreases and then increases.

[C].

remains constant.

[D].

increases and then decreases.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In case of laminar flow of fluid through a circular pipe, the
[A].

shear stress over the cross-section is proportional to the distance from the surface of the pipe.

[B].

surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder.

[C].

velocity profile varies hyperbolically and the shear stress remains constant over the cross-section.

[D].

average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius).

Answer: Option B

Explanation:

No answer description available for this question.

Question: Working of a __________ pump characterises mixed flow.
[A].

turbine

[B].

piston

[C].

diaphragm

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.