Question # 1

A flowing liquid possess

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K.E

P.E

Pressure Energy

All

Blood is an

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Compressible fluid

incompressible fluid

hard

none of them

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

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1/4 times

4 times

Twice

1/2 of 8 cm diameter pipe

When weight of an object falling freely becomes equal to the drag force, then the body will move with

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increasing speed

decreasing speed

constant speed

none of them

Which of the following has the greatest coefficient of viscosity?

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water

gasoline

honey

tar

Bernoulli's equation is based upon law of conversation

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Mass

Momentum

Energy

None of these

The law of conservation of energy gives us

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equation of continuity

Bernoulli's theorem

both of them

none of them

Fluid friction is _____ the friction between two solid surfaces:

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Greater than

Smaller than

Equal to

None of these

According to Stoke's law, drag force depends on

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Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

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Streamline, cannot

Turbulent, cannot

Streamline, can

None of these

The body passing a viscous medium affected by:

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One force only

Two forces only

Four forces

None of these

The SI unit of viscosity is

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kg m^-1s^-1

kg ms^-1

kg m^-1s^-2

kg m^-1s

The velocity of falling raindrop attains limited value because of

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Up trust of air

Viscous force exerted by air

Surface tension effect

Air currents atmosphere

The velocity gained by the fluid in falling through the distance (h_{1 - h}_{2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the}

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orifices

efflux

fluid

none of them

The body will move with terminal velocity when it acquires

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minimum speed

zero speed

maximum speed

none of them

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

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ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers

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