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. | If in a satellite orbiting the earth, a cork is immersed in a jar of water and released, it will |

A. | Rise [Wrong Answer] |

B. | Sink [Wrong Answer] |

C. | Remain where left [Correct Answer] |

D. | None of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :Karan Nijhawan Said on 2019-11-04 23:19:59Rise !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ 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

⇒ Flow in a pipe is laminar if the Reynold's number is

Less than 2000

Between 2000 and 4000

Between 4000 and 6000

Equal to 10000

⇒ The weight per unit volume of a liquid at a standard temperature and pressure is called

Specific weight

Mass density

Specific gravity

None of these

⇒ 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)

⇒ 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

⇒ 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

⇒ 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.

⇒ Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is.

slightly less

slightly more

nearly half

equal

⇒ Bernoulli's theorem deals with the principle of conservation of

Energy

Momentum

Mass

Force

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

Rounded corner

Sharp corner

Parabolic corner

None of these

⇒ In case of an airfoil, the separation of flow occurs.

at the extreme rear of body

at the extreme front of body

midway between rear and front of body

any where between rear and front of body depending upon Reynolds number

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

Downward

Upward

Horizontal

Zero

⇒ 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 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

⇒ Drag force is a function of

Velocity of the body

Mass density of the fluid

Projected area of the body

All of the above

⇒ The major loss of energy in long pipes is due to

sudden enlargement

sudden contraction

gradual contraction or enlargement

friction

⇒ Coefficient of contraction for an external cylindrical mouthpiece is

1.00

0.855

0.7H

0.611

⇒ The specific gravity of water at standard temperature (4°C) equals to

0.999

1.000

1.010

0.500

⇒ The principle of operation of Brahma's press is based on

Boyle's law

Pascal's law

Dalton's law

Newton's law

⇒ 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

⇒ The basic equation which governs the motion of incompressible viscous fluid in laminar motion is called as

Hagen-Poiseullie equation

Stokes equation

Darcy-Weisbach equation

Navier-Stokes equation

⇒ 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

⇒ 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 length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is

32 km

20 km

8 km

4 km

⇒ When an ideal fluid flows past a sphere,

highest intensity of pressure occurs around the circumference at right angles to flow

lowest pressure intensity occurs at front stagnation point

lowest pressure intensity occurs at rear stagnation point

total drag is zero

⇒ The horizontal component of force on a curved surface is equal to the

product of pressure intensity at its centroid and area

force on a vertical projection of the curved surface

weight of liquid vertically above the curved surface

force on the horizontal projection of the curved surface

⇒ 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

⇒ Two throw reciprocating pump means

Double cylindrical pump

Double acting pump

Duplex double acting pump

Single acting pump

⇒ An ideal fluid is.

one which obeys Newton's law of viscosity

frictionless and incompressible

very viscous

frictionless and compressible

⇒ An ideal fluid is

one which obeys Newton's law of viscosity

frictionless and incompressible

very viscous

frictionless and compressible