Hydraulics And Fluid Mechanics In Me - Study Mode

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[#36] Braking jet in an impulse turbine is used

(A) To break the jet of water

(B) To bring the runner to rest in a short time

(C) To change the direction of runner

(D) None of these

Correct Answer

(B) To bring the runner to rest in a short time

[#37] Rotameter is a device used to measure

(A) Absolute pressure

(B) Velocity of fluid

(C) Flow

(D) Rotation

Correct Answer

(C) Flow

[#38] In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

(A) Less than

(B) More than

(C) Equal to

(D) None of these

Correct Answer

(A) Less than

[#39] In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

(A) Less than

(B) More than

(C) Equal to

(D) None of these

Correct Answer

(A) Less than

[#40] Choose the wrong statement

Correct Answer

(D) When in equilibrium, fluids can sustain shear forces
(H) Viscosity of liquids is appreciably affected by change in pressure
(L) The vertical component passes through the center of pressure of the volume
(P) Center of buoyancy is located above the center of gravity of the displaced liquid
(T) All floating bodies are stable