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Q1. | The specific speed of a Francis turbine is in the rangse |

A. | 10 to 35 [Correct Answer] |

B. | 35 to 60 [Wrong Answer] |

C. | 60 to 400 [Wrong Answer] |

D. | 300 to 1200 [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :Shriram Bairwa Said on 2018-12-04 06:33:59Correct C Shriram Bairwa Said on 2018-12-04 06:33:08Correct C Prashant Rajput Said on 2018-04-28 13:06:5860-300 Milan chavda Said on 2018-02-18 21:57:52C option is correct Pankaj Said on 2017-10-10 17:54:5515 -100 is specific speed !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

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

10 to 35

35 to 60

60 to 400

300 to 1200

⇒ 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

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

can be zero

is never zero

is always zero

is independent of coordinates

⇒ 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

⇒ A boat with wood is floating in a lake. If the wood is thrown in the lake the water level will

Go up

Go down

Remain unchanged

None of the above

⇒ Ay between two stream lines represents

velocity

discharge

head

pressure

⇒ 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.

⇒ The unit of kinematic viscosity is

gm/cm-sec2

dyne-sec/cm2

gm/cm2-sec

cm2/sec

⇒ The speed of a pressure wave through a pipe depends upon.

the length of pipe

the viscosity of fluid

the bulk modulus for the fluid

the original head

⇒ The generation of hydroelectric power as compared to power generated by coal, oil etc. is

Cheaper

Costlier

At par

Can not compare

⇒ 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

⇒ In series-pipe problems

the head loss is same through each pipe

the discharge is same through each pipe

a trial solution is not necessary

the discharge through each pipe is added to obtain total discharge

⇒ An ideal fluid is

one which obeys Newton's law of viscosity

frictionless and incompressible

very viscous

frictionless and compressible

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

Velocity head

Pressure head

Friction head

Datum head

⇒ The eddy viscosity for turbulent flow is.

a function of temperature only

a physical property of the fluid.

dependent on the flow

independent of the flow

⇒ The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is

1/2

2/3

3/2

2

⇒ In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

22.5 m/sec.

33 m/sec.

40 m/sec.

90 m/sec.

⇒ 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 pitot tube is used to measure

velocity at stagnation point

stagnation pressure

static pressure

dynamic pressure

⇒ The power channel that extends from the intake works to the power house is called

Lead race

Head race

Diversion canal

Penstock

⇒ Hot wire anemometer is used to measure.

discharge

velocity of gas

pressure intensity of gas

pressure intensity of liquid

⇒ 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

⇒ When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

linearly with radial distance

as the square of the radial distance

inversely as the square of the radial distance

inversely as the radial distance

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

Rounded corner

Sharp corner

Parabolic corner

None of these

⇒ In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is.

22.5 m/sec.

33 m/sec.

40 m/sec.

90 m/sec.

⇒ When a bubble rises from the bottom of a lake to the surface, its radius doubles. The atmospheric pressure is equal to that of a column of water of height H. The depth of the lake is

H

2H

7H

8H

⇒ The concept of boundary layer was first introduced by

Newton

Prandtl

Reynold

Kutter

⇒ With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on.

a circular disc of plate held normal to flow

a sphere

a cylinder

a streamlined body

⇒ An aeroplane works on

Archimedes' principle

Pascal's law

Bernoulli's principle

Stoke's law