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Q1. | In a tank or channel, notch is provided measure |

A. | Velocity [Wrong Answer] |

B. | Pressure [Wrong Answer] |

C. | Discharge [Correct Answer] |

D. | Static energy [Wrong Answer] |

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

⇒ The velocity distribution for laminar flow through a circular tube.

is constant over the cross-section

varies linearly from zero at walls to maximum at centre

varies parabolically with maximum at the centre

none of the above

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

Stream lined bodies

Bluft bodies

Both (A) and (B)

None of the above

⇒ A gale blows over a house. The force due to the gale on the roof is

Downward

Upward

Horizontal

Zero

⇒ Cavitation causes damage in turbine runner near the

Inlet on the concave side of blades

Inlet on the convex side of blades

Outlet on the convex side of blades

Outlet on the concave side of blades

⇒ 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

⇒ In a broad crested weir, width of crest of the weir will be

More than 0.5 H

Less than 0.5 H

Both (A) and (B)

None of the two

⇒ 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

⇒ If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as

x

x

x

x/7

⇒ Surge wave in a rectangular channel is an example of

i) steady flow

ii) unsteady flow

iii) uniform flow

iv) non-uniform flow

The correct answer is

(i) and (iii)

(ii) and (iii)

(i) and (:v)

(ii) and (iv)

⇒ The value of friction factor 'f' for smooth pipes for Reynolds number 106 is approximately equal to.

0.1

0.01

0.001

0.0001

⇒ In order to avoid cavitation the upstream edge of broad crested weir should have

Rounded corner

Sharp corner

Parabolic corner

None of these

⇒ The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is.

constant over the cross section

parabolic distribution across the section

zero at the mid plane and varies linearly with distance from mid plane

zero at plates and increases linearly to midpoint

⇒ 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

⇒ Coefficient of velocity for Borda's mouth piece running full is

0.611

0.707

0.855

1.00

⇒ An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to

g/3

g/2

2g/3

g

⇒ Pitot tube is a device used in the flowing fluid for measuring

Discharge

Pressure

Velocity

Kinetic and potential energy

⇒ A body in neutral equilibrium will rotate about

Centre of gravity and metacentre

Centre of pressure and metacentre

Centre of gravity and centre of buoyancy

Centre of gravity, centre of buoyancy and metacentre

⇒ Separation of flow occurs when.

the pressure intensity reaches a minimum

the cross-section of a channel is reduced

the boundary layer comes to rest

all of the above

⇒ For a turbulent flow, the Reynold's number should be more than

4000

2700

2000

500

⇒ For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

constant

dependent only on Reynolds number

a function of Reynolds number and relative roughness

dependent on relative roughness only

⇒ The losses are more in

laminar flow

transition flow

turbulent flow

critical flow

⇒ The continuity equation

pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid.

steady flow

uniform flow

incompressible flow

frictionless flow where pi and p2 are mass densities.

⇒ When a body is weighed in a liquid, the loss in its weight depends upon

Volume of the body

Mass of the body

Shape of the body

CG of the body

⇒ 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

⇒ 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

⇒ Select the incorrect statement.

The pressure intensity at vena contracta is atmospheric.

Contraction is least at vena contracta.

Stream lines are parallel throughout the jet at vena contracta.

Coefficient of contraction is always less than one.

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

mass

energy

momentum

none of the above

⇒ 1 atm. pressure is equivalent to

1.315 kgf/cm

^{2}

1000 newton

760 mm Hg

14.7 pascal

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

Friction drag force

Pressure drag force

Total drag force

None of these

⇒ The motion of air mass in a tornado is a

free vortex motion

forced vortex motion

free vortex at center and forced vortex outside

forced vortex at center and free vortex outside