Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | The losses are more in |

A. | laminar flow [Wrong Answer] |

B. | transition flow [Wrong Answer] |

C. | turbulent flow [Correct Answer] |

D. | critical flow [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 :**

⇒ Two throw reciprocating pump means

Double cylindrical pump

Double acting pump

Duplex double acting pump

Single acting pump

⇒ The viscosity of a gas

decreases with increase in temperature

increases with increase in temperature

is independent of temperature

is independent of pressure for very high pressure intensities

⇒ When the metacentre of a floating body is lower than the centre of gravity, then the body will be in

Unstable equilibrium

Stable equilibrium

Neutral equilibrium

None of these

⇒ The Prartdtl mixing length is

zero at the pipe wall

maximum at the pipe wall

independent of shear stress

none of the above

⇒ 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.

⇒ Select the correct statement.

The absolute roughness of a pipe de-creases with time.

A pipe becomes smooth after using for long time.

The friction factor decreases with time.

The absolute roughness increases with time.

⇒ 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

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

Pelton-wheel

Francis

Keplan

All of these

⇒ If weir is used as a spillway it will have a crest

Ogee shaped

Broad and flat

Narrow

Cippolet

⇒ Hot wire anemometer is used to measure

discharge

velocity of gas

pressure intensity of gas

pressure intensity of liquid

⇒ In which of the following the friction drag is generally larger than pressure drag?

a circular disc or plate held normal to flow

a sphere

a cylinder

an airfoil

⇒ 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

⇒ When the flow in open channel is gradually varied, the flow is said to be

Steady uniform flow

Steady non-uniform flow

Unsteady uniform flow

Unsteady non-uniform flow

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

Lead race

Head race

Diversion canal

Penstock

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

Irrotational flow

Non-uniform flow

Uniform flow

Unsteady flow

⇒ 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

⇒ The viscosity of a gas.

decreases with increase in temperature

increases with increase in temperature

is independent of temperature

is independent of pressure for very high pressure intensities

⇒ The increase in meta centric height

i) increases stability

ii) decreases stability

iii) increases comfort for passengers

iv) decreases comfort for passengers

The correct answer is

(i) and (iii)

(i)and(iv)

(ii) and (iii)

(ii) and (iv)

⇒ Flow at constant rate through a tapering pipe is

i) steady flow

ii) uniform flow

iii) unsteady flow

iv) non-uniform flow

The correct answer is

(i) and (ii)

(i)and(iv)

(ii) and (iii)

(ii) and (iv)

⇒ In a forced vortex motion, the velocity of flow is

directly proportional to its radial distance from axis of rotation

inversely proportional to its radial distance from the axis of rotation

inversely proportional to the square of its radial distance from the axis of rotation

directly proportional to the square of its radial distance from the axis of rotation

⇒ 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

⇒ 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

⇒ When a body is wholly or partially immersed in liquid it appears to lose weight. This loss of weight is equal to the weight of

Water displaced by the body

Weight of liquid displaced by the body

Equal volume of water

Equal volume of liquid

⇒ Specific speed of Francis turbine varies in between

10 to 35

10 to 50

60 to 400

300 to 1000

⇒ 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 ratio of friction drag to pressure drag is

1/3

2/3

1

2

⇒ The sheet of water flowing through a notch or over a weir is known as

Nappe

Crest

Height of weir/notch

Sill

⇒ 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

⇒ A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be.

less than 1 m/sec

1 m/sec

1.5 m/sec

2 m/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