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Q1. | The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is. |

A. | at the centroid of the submerged area [Wrong Answer] |

B. | always above the centroid of the area [Wrong Answer] |

C. | always below the centroid of the area [Correct Answer] |

D. | none of the above [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

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

when its metacentric height is zero

when the metacentre is above the centre of gravity

when the metacentre is below the centre of gravity

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

⇒ For a flow to be turbulent in an open channel Reynold's number should not be less than

500

1000

1500

2000

⇒ The bodies which have definite separation points fixed by their shapes are known as

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Both (A) and (B)

None of the above

⇒ The hydraulic grade line is.

always above the centre line of pipe

never above the energy grade line

always sloping downward in the direction of flow

all of the above

⇒ For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be

300

337.5

600

675

⇒ The specific speed of a Francis turbine is in the rangse

10 to 35

35 to 60

60 to 400

300 to 1200

⇒ When Froude's number is more than 1, then the flow is termed as

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Subcritical flow

Streaming flow

Shooting flow

⇒ Which of the following velocity potentials satisfies continuity equation ?

x2y

x2-y2

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⇒ The depth 'd' below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be

0.423 D

0.577 D

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⇒ The pressure at the summit of a syphon is

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more than atmospheric

none of the above

⇒ A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

1 m

10m

100m

none of the above

⇒ The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

at the centroid of the submerged area

always above the centroid of the area

always below the centroid of the area

none of the above

⇒ The specific weight of water in S.I. units is

9.81 gm

981 gm

9.81 k N/m

^{3}

9.81 x 10

^{3}k N/m

^{2}

⇒ The theoretical value of coefficient of contraction of a sharp edged orifice is

0.611

0.85

0.98

1.00

⇒ In steady flow of a fluid, the total accele ration of any fluid particle

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is never zero

is always zero

is independent of coordinates

⇒ Stanton diagram is a.

log-log plot of friction factor against Reynolds number

log-log plot of relative roughness against Reynolds number

semi-log plot of friction factor against Reynolds number

semi-log plot of friction factor against relative roughness

⇒ The velocity of the liquid flowting through the divergent portion of a venturimeter

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Decreases

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⇒ In a free vortex, velocity

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⇒ The concept of boundary layer was first introduced by

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⇒ If a vessel containing liquid moves downward with a constant acceleration equal to 'g' then

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there will be vacuum in the liquid

the pressure in the liquid mass is greater than hydrostatic pressure

none of the above

⇒ Which of the following velocity potentials satisfies continuity equation ?

x2y

x2-y2

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⇒ The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to

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0.611

⇒ Bernoulli's equation is applied to

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⇒ Newton's law of viscosity relates.

intensity of pressure and rate of angular deformation

shear stress and rate of angular deformation

shear stress, viscosity and temperature

viscosity and rate of angular deformation

⇒ The turbine suitable for low heads and high flow rates is

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Keplan

All of these