Hydraulics And Fluid Mechanics In Me - Study Mode

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[#356] When the Mach number is more than 6, the flow is called

(A) Sub-sonic flow

(B) Sonic flow

(C) Super-sonic flow

(D) Hyper-sonic flow

Correct Answer

(D) Hyper-sonic flow

[#357] When the Mach number is less than unity, the flow is called

(A) Sub-sonic flow

(B) Sonic flow

(C) Super-sonic flow

(D) Hyper-sonic flow

Correct Answer

(A) Sub-sonic flow

[#358] The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

(A) Decreases

(B) Increases

(C) Remain same

(D) None of these

Correct Answer

(B) Increases

[#359] The power produced by the reaction turbine is ________ to the head of water.

(A) Directly proportional

(B) Inversely proportional

(C) 4 th power

(D) None of these

Correct Answer

(A) Directly proportional

[#360] For a body floating in a liquid the normal pressure exerted by the liquid acts at

(A) Bottom surface of the body

(B) C.G. of the body

(C) Metacenter

(D) All points on the surface of the body

Correct Answer

(D) All points on the surface of the body