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Q1. | Cavitation causes damage in turbine runner near the |

A. | Inlet on the concave side of blades [Wrong Answer] |

B. | Inlet on the convex side of blades [Wrong Answer] |

C. | Outlet on the convex side of blades [Correct Answer] |

D. | Outlet on the concave side of blades [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ 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 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

⇒ Which of the following is an incorrect statement ?

Coefficient of contraction of a venturimeter is unity.

Flow nozzle is cheaper than venturimeter but has higher energy loss.

Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined.

None of the above statement is correct.

⇒ Two pieces of metal when immersed in a liquid have equal upthrust on them, then

Both pieces must have equal weig.hts

Both pieces must have equal densities

Both pieces must have equal volumes

Both are floating to the same depth

⇒ Ay between two stream lines represents.

velocity

discharge

head

pressure

⇒ 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)

⇒ 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

⇒ Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is.

less than d

between d and 1.5 d

between 1.5 d and 2d

greater than 2d

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

the pressure throughout the liquid mass is atmospheric

there will be vacuum in the liquid

the pressure in the liquid mass is greater than hydrostatic pressure

none of the above

⇒ The valve provided in a suction pipe is called

Float valve

Gate valve

Foot valve

Two-way valve

⇒ 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

⇒ Stream lines and path lines always coincide in case of

steady flow

laminar flow

uniform flow

turbulent flow

⇒ A hydrogen bal loon released on the moon would

Climb up with an acceleration of 9.8 m/sec

^{2}

Climb up with an acceleration of 9.8 x 6 m/sec

^{2}

Neither climb nor fall

Fall with an acceleration of 9.8/6 m/sec

^{2}

⇒ Liquids

Have no shape

Can not be compressed

Both (A) and (B)

None of the above

⇒ The discharge through a V- notch varies as

H1/2

H3'2

H5/2

H5'4 where H is head.

⇒ Viscosity of an oil changes with

Temperature

Speed

Weight

Type of bearing

⇒ As a bubble comes from the bottom of a lake to the top, its radius

Increases

Decreases

Does not change

Becomes zero

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

mass

energy

momentum

none of the above

⇒ Which of the following is used to measure the discharge ?

current meter

venturimeter

pitot tube

hotwire anemometer

⇒ The Euler's equation for steady flow of an ideal fluid along a stream line is based on Newton's

First law of force

Second law of motion

Third law of momentum

Law of friction

⇒ An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be.

4 kN/m2

10 kN/m2

12 kN/m2

14 kN/m2

⇒ 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

⇒ 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

⇒ The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is.

1/3

1/4

1/2

2/3

⇒ Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

5%

10%

15%

20%

⇒ 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

⇒ In a single acting reciprocating putnp, water is delivered in

Suction stroke

Delivery stroke

Middle of suction stroke

Middle of delivery stroke

⇒ In a Pelton-wheel, hydraulic efficiency will be maximum when speed of the buckets as compared to velocity of the jet will be

Equal

Double

Half

One fourth

⇒ 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

⇒ An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be

4 kN/m2

10 kN/m2

12 kN/m2

14 kN/m2