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Q1. | In a water wheel when water enters the buckets mounted on the periphery of a wheel at its top, then it will be known as |

A. | Over shot wheel [Correct Answer] |

B. | Breast water wheel [Wrong Answer] |

C. | Under shot wheel [Wrong Answer] |

D. | Pelton-wheel [Wrong Answer] |

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Explanation:-
Answer : ADiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Coefficient of velocity of venturimeter.

is independent of Reynolds number

decreases with higher Reynolds number

is equal to the coefficient of discharge of venturimeter

none of the above

⇒ A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is.

5kN

lOkN

15 kN

20 kN

⇒ The losses are more in

laminar flow

transition flow

turbulent flow

critical flow

⇒ Two pipe systems are said to be equivalent when.

head loss and discharge are same in two systems

length of pipe and discharge are same in two systems

friction factor and length are same in two systems

length and diameter are same in two systems

⇒ For a body floating in water the apparent weight is equal to

Actual weight of the body

Zero

Weight of the body minus weight of the liquid

None of the above

⇒ When a loaded boat enters into the sea from a river. it rises because

There is more water in sea than in river

Sea water is denser than river

There is difference of temperature

Sea is deeper than river

⇒ 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

⇒ For a stream line body, the predominant drag force is

Friction drag force

Pressure drag force

Total drag force

None of these

⇒ The discharge of a liquid of kinematic viscosity 4 cm2/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is.

laminar flow

transition flow

turbulent flow

not predictable from the given data

⇒ In open channel water flows under

Force of gravity

Atmospheric pressure

Hydrostatic pressure

Mechanical pressure

⇒ The total energy line lies over the hydraulic gradient line by an amount equal to

Velocity head

Pressure head

Friction head

Datum head

⇒ The relationship dp/dx = dz/dy is valid for

Irrotational flow

Non-uniform flow

Uniform flow

Unsteady flow

⇒ Size of a venturimeter is specified by

pipe diameter

throat diameter

angle of diverging section

both pipe diameter as well as throat diameter

⇒ If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is.

less than 1

between 1 and 100

160

200

⇒ Metacentric height for small values of angle of heel is the distance between the.

centre of gravity and centre of buoy-ancy

centre of gravity and metacentre

centre of buoyancy and metacentre

free surface and centre of buoyancy

⇒ In a fluid flow the line of constant piezometric head passes through two points which have the same

Elevation

Pressure

Velocity

Velocity potential

⇒ The point at which the resultant pressure on an immersed surface acts is known as

Centre of gravity

Centre of depth

Centre of pressure

Centre of immersed surface

⇒ The motion of air mass in a tornado is a.

free vortex motion

forced vortex motion

ree vortex at center and forced vortex outside

forced vortex at center and free vortex outside

⇒ An ideal flow of any fluid must fulfil the following

Newton's law of viscosity

Newton's law of motion

Boundary Layer theory

Continuity equation

⇒ Pelton-wheel is a

Tangential flow turbine

Radial flow turbine

Mixed flow turbine

Axial flow turbine

⇒ If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

1

4/3

2

4

⇒ Equation of continuity is based on the principle of conservation of.

mass

energy

momentum

none of the above

⇒ Which of the following has highest coefficient of discharge ?

sharp edged orifice

venturimeter

Borda's mouthpiece running full

CipoUetti weir

⇒ The pressure drag depends upon

The boundary layer formation

The separation of boundary layer

The size of wake

Both (B) and (C) above

⇒ If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

0.25

0.50

1.0

none of the above

⇒ Which of the following has highest coefficient of discharge ?

sharp edged orifice

venturimeter

Borda's mouthpiece running full

CipoUetti weir

⇒ For laminar flow in a pipe of circular cross-section, the Darcy's friction factor f is.

directly proportional to Reynolds number and independent of pipe wall roughness

directly proportional to pipe wall roughness and independent of Reynolds number

inversely proportional to Reynolds number and indpendent of pipe wall roughness

inversely proportional to Reynolds number and directly proportional to pipe wall roughness

⇒ The concept of boundary layer was first introduced by

Newton

Prandtl

Reynold

Kutter

⇒ As compared to laminar flow, in turbulent flow, boundary layers will be

Thinner

Thicker

Same

Half

⇒ When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is.

L/4

L/3

L/2

L