Question # 1

What are the SI base units of the coefficient of viscosity

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Kg m s^-2

kgm² s^-2

Kg m s^-1

kg m^-1s^-1

Matter is made up of very tiny particles called

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Atoms

Molecules

Ions

None of these

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

N s m^-2is unit of:

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Drag force

Pressure

Surface tension

Coefficient of viscosity

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

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very high

very low

constant

zero

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

Which of the following is a characteristic of an ideal fluid?

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it is non-viscous

it is incompressible

it's motion is steady

all of the above

The mass of fluid passing through any cross-section per unit time is called

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electric flux

magnetic flux

mass flux

none of them

0.10 cm can be written as:

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1.0 x 10^-2m

1.0 x 10^-3cm

1.0 x 10^-4cm

1. x 10^-4m

Liquids and gasses have

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zero viscosity

non-zero viscosity

very large viscosity

very small viscosity

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

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Starts increasing

Starts decreasing

Becomes constant

Is called escape velocity

Stock's law holds for:

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Motion through free space

Motion through viscous medium

Bodies of all shapes

None of these

Where the streamlines are very far apart from each other, the pressure will be

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low

zero

high

all of them

Glycerin has viscosity _____ the viscosity of water:

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More than

Equal to

Less than

None of these

Under normal circumstances, the volume of blood is sufficient to keep the vessels

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flatted for all times

inflated for all times

inflated for small times

none of them

Density of fluid is defined as:

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Its volume to mass ratio

Product of volume and mass

Its mass of volume ratio

None of these

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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