Fluid Dynamics - Set 1

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MM

Mashaal Masha

Oct 12, 2022

Choose the correct options for the following questions.

The property of fluids due to which they resist their own flow is called:

Difficulty: Easy

A:

Drag force

B:

Surface tension

C:

Viscosity

D:

None

The resistance offered by a fluid to a solid moving inside is called:

Difficulty: Easy

A:

Drag force

B:

Surface tension

C:

$N s m^{-2}$ is unit of:

D:

None

A body passing through a viscous medium is affected by:

Difficulty: Easy

A:

One force only

B:

Two forces

C:

Three forces

D:

None

Machine parts are jammed due to:

Difficulty: Easy

A:

Increase in viscosity of lubricant

B:

Decrease in viscosity of lubricant

C:

Decrease in surface tension of lubricant

D:

None

$N s m^{-2}$ is unit of:

Difficulty: Easy

A:

Drag force

B:

Pressure

C:

Surface tension

D:

Coefficient of viscosity

A body moving through a viscous medium eventually comes to rest because of:

Difficulty: Easy

A:

Force of gravity

B:

Force of friction

C:

Its weight

D:

Both a and c

Glycerin has viscosity _________ the viscosity of water

Difficulty: Easy

A:

More than

B:

Equal to

C:

Less than

D:

None

Unit of viscosity is:

Difficulty: Easy

A:

Kgm^{-1} sec^{-1}

B:

N s m^{-2}

C:

J s m^{-3}

D:

All

Density of a fluid is defined as:

Difficulty: Easy

A:

Its volume to mass ratio

B:

Product of volume and mass

C:

Its mass of volume ratio

D:

None

Fluid friction is ____ the friction between two solid surfaces

Difficulty: Easy

A:

Greater than

B:

Smaller than

C:

Equal to

D:

None

Fluid Dynamics - Set 1