Fluid Mechanics MCQs

Question 1

Power loss in an orificemeter is __________ that in a venturimeter.

Accepted Answer

More than

Answer

Less than

Answer

Same as

Answer

Data insufficient, cannot be predicted

Question 2

The terminal velocity of a particle moving through a fluid varies as dpn. The value of n is equal to __________ in Stoke's law regime.

Accepted Answer

2

Answer

1

Answer

0.5

Answer

1.5

Question 3

For the production of very high vacuum, a __________ pump is normally used.

Accepted Answer

Diffusion

Answer

Centrifugal

Answer

Jet ejector

Answer

Piston

Question 4

Drag co-efficient in hindered settling is __________ that in free settling.

Accepted Answer

Always greater than

Answer

Less than

Answer

Equal to

Answer

Not necessarily greater than

Question 5

Centre of pressure in an immersed body is __________ the centre of gravity.

Accepted Answer

Below

Answer

Above

Answer

At

Answer

Either above or below; depends on the liquid density

Question 6

The curve of metacentre for a floating body __________ the curve of buoyancy.

Accepted Answer

Is the evolute of

Answer

Is always below

Answer

Intersects at right angle

Answer

Is tangential to

Question 7

At a constant speed of the centrifugal pump . it __________ the impeller diameter.

Accepted Answer

All of the above

Answer

Capacity varies directly with

Answer

Head varies as the square of

Answer

Horsepower varies as the cube of

Question 8

Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.

Accepted Answer

Viscous

Answer

Non-viscous

Answer

Turbulent

Answer

Rotational

Question 9

In the Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.

Accepted Answer

Inversely proportional to

Answer

Directly proportional to

Answer

Inversely proportional to the square root of

Answer

Independent of